java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data --generate-csv --csv-dir csv -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -s ../../../trunk/examples/settings/pu-bench/svcomp-Reach-32bit-Automizer_Default_PUPT.epf -i ../../../trunk/examples/programs/toy/tooDifficultLoopInvariant/MonadicInvariant01.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1cc990c [2018-10-01 01:09:32,834 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-01 01:09:32,836 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-01 01:09:32,847 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2018-10-01 01:09:32,878 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/pu-bench/svcomp-Reach-32bit-Automizer_Default_PUPT.epf [2018-10-01 01:09:32,901 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-01 01:09:32,902 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-01 01:09:32,903 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-01 01:09:32,903 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-01 01:09:32,904 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-01 01:09:32,904 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-01 01:09:32,904 INFO L133 SettingsManager]: * Use SBE=true [2018-10-01 01:09:32,904 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-01 01:09:32,904 INFO L133 SettingsManager]: * sizeof long=4 [2018-10-01 01:09:32,904 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-01 01:09:32,905 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-10-01 01:09:32,905 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-01 01:09:32,905 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-01 01:09:32,905 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-01 01:09:32,905 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-01 01:09:32,906 INFO L133 SettingsManager]: * sizeof long double=12 [2018-10-01 01:09:32,906 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-01 01:09:32,906 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-01 01:09:32,906 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-01 01:09:32,907 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-01 01:09:32,907 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-01 01:09:32,908 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-01 01:09:32,908 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-01 01:09:32,908 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-01 01:09:32,908 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-01 01:09:32,908 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-01 01:09:32,909 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-01 01:09:32,909 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-01 01:09:32,909 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-01 01:09:32,909 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-01 01:09:32,909 INFO L133 SettingsManager]: * Use predicate trie based predicate unification=true [2018-10-01 01:09:32,964 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-01 01:09:32,978 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-01 01:09:32,986 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-01 01:09:32,988 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-10-01 01:09:32,988 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-10-01 01:09:32,989 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/toy/tooDifficultLoopInvariant/MonadicInvariant01.bpl [2018-10-01 01:09:32,990 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/toy/tooDifficultLoopInvariant/MonadicInvariant01.bpl' [2018-10-01 01:09:33,037 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-01 01:09:33,040 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-10-01 01:09:33,041 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-01 01:09:33,044 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-01 01:09:33,044 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-01 01:09:33,065 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "MonadicInvariant01.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.10 01:09:33" (1/1) ... [2018-10-01 01:09:33,077 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "MonadicInvariant01.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.10 01:09:33" (1/1) ... [2018-10-01 01:09:33,082 WARN L165 Inliner]: Program contained no entry procedure! [2018-10-01 01:09:33,082 WARN L168 Inliner]: Missing entry procedures: [ULTIMATE.start] [2018-10-01 01:09:33,082 WARN L175 Inliner]: Fallback enabled. All procedures will be processed. [2018-10-01 01:09:33,085 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-01 01:09:33,085 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-01 01:09:33,086 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-01 01:09:33,086 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-01 01:09:33,097 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "MonadicInvariant01.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.10 01:09:33" (1/1) ... [2018-10-01 01:09:33,097 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "MonadicInvariant01.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.10 01:09:33" (1/1) ... [2018-10-01 01:09:33,098 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "MonadicInvariant01.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.10 01:09:33" (1/1) ... [2018-10-01 01:09:33,098 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "MonadicInvariant01.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.10 01:09:33" (1/1) ... [2018-10-01 01:09:33,100 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "MonadicInvariant01.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.10 01:09:33" (1/1) ... [2018-10-01 01:09:33,104 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "MonadicInvariant01.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.10 01:09:33" (1/1) ... [2018-10-01 01:09:33,105 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "MonadicInvariant01.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.10 01:09:33" (1/1) ... [2018-10-01 01:09:33,106 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-01 01:09:33,107 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-01 01:09:33,107 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-01 01:09:33,107 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-01 01:09:33,108 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "MonadicInvariant01.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.10 01:09:33" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-01 01:09:33,179 INFO L124 BoogieDeclarations]: Specification and implementation of procedure main given in one single declaration [2018-10-01 01:09:33,179 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-01 01:09:33,180 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-01 01:09:33,337 INFO L345 CfgBuilder]: Using library mode [2018-10-01 01:09:33,337 INFO L202 PluginConnector]: Adding new model MonadicInvariant01.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.10 01:09:33 BoogieIcfgContainer [2018-10-01 01:09:33,338 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-01 01:09:33,339 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-01 01:09:33,339 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-01 01:09:33,342 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-01 01:09:33,342 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "MonadicInvariant01.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.10 01:09:33" (1/2) ... [2018-10-01 01:09:33,343 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20b84a8c and model type MonadicInvariant01.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.10 01:09:33, skipping insertion in model container [2018-10-01 01:09:33,344 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "MonadicInvariant01.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.10 01:09:33" (2/2) ... [2018-10-01 01:09:33,346 INFO L112 eAbstractionObserver]: Analyzing ICFG MonadicInvariant01.bpl [2018-10-01 01:09:33,355 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-01 01:09:33,363 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-01 01:09:33,412 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-10-01 01:09:33,413 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-10-01 01:09:33,413 INFO L382 AbstractCegarLoop]: Hoare is true [2018-10-01 01:09:33,413 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-01 01:09:33,413 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-01 01:09:33,413 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-01 01:09:33,414 INFO L386 AbstractCegarLoop]: Difference is false [2018-10-01 01:09:33,414 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-01 01:09:33,414 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-01 01:09:33,429 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states. [2018-10-01 01:09:33,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2018-10-01 01:09:33,435 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:09:33,436 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1] [2018-10-01 01:09:33,437 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:09:33,444 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:09:33,444 INFO L82 PathProgramCache]: Analyzing trace with hash 29920, now seen corresponding path program 1 times [2018-10-01 01:09:33,446 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:09:33,447 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:09:33,503 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:09:33,504 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:09:33,504 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:09:33,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:09:33,610 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:09:33,612 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-01 01:09:33,612 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2018-10-01 01:09:33,617 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-01 01:09:33,629 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-01 01:09:33,630 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:09:33,632 INFO L87 Difference]: Start difference. First operand 6 states. Second operand 3 states. [2018-10-01 01:09:33,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:09:33,874 INFO L93 Difference]: Finished difference Result 11 states and 11 transitions. [2018-10-01 01:09:33,875 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-01 01:09:33,876 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2018-10-01 01:09:33,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:09:33,887 INFO L225 Difference]: With dead ends: 11 [2018-10-01 01:09:33,888 INFO L226 Difference]: Without dead ends: 6 [2018-10-01 01:09:33,891 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-10-01 01:09:33,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6 states. [2018-10-01 01:09:33,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6 to 6. [2018-10-01 01:09:33,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2018-10-01 01:09:33,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 6 transitions. [2018-10-01 01:09:33,925 INFO L78 Accepts]: Start accepts. Automaton has 6 states and 6 transitions. Word has length 3 [2018-10-01 01:09:33,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:09:33,926 INFO L480 AbstractCegarLoop]: Abstraction has 6 states and 6 transitions. [2018-10-01 01:09:33,926 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-01 01:09:33,926 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states and 6 transitions. [2018-10-01 01:09:33,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2018-10-01 01:09:33,927 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:09:33,927 INFO L375 BasicCegarLoop]: trace histogram [2, 1, 1, 1] [2018-10-01 01:09:33,927 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:09:33,927 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:09:33,928 INFO L82 PathProgramCache]: Analyzing trace with hash 28754210, now seen corresponding path program 1 times [2018-10-01 01:09:33,928 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:09:33,928 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:09:33,929 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:09:33,929 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:09:33,929 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:09:33,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:09:33,987 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:09:33,987 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:09:33,988 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:09:34,000 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:09:34,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:09:34,030 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:09:34,136 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:09:34,161 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:09:34,161 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2] total 4 [2018-10-01 01:09:34,161 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-01 01:09:34,162 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-01 01:09:34,162 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:09:34,162 INFO L87 Difference]: Start difference. First operand 6 states and 6 transitions. Second operand 6 states. [2018-10-01 01:09:34,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:09:34,372 INFO L93 Difference]: Finished difference Result 9 states and 9 transitions. [2018-10-01 01:09:34,372 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-01 01:09:34,372 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 5 [2018-10-01 01:09:34,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:09:34,373 INFO L225 Difference]: With dead ends: 9 [2018-10-01 01:09:34,373 INFO L226 Difference]: Without dead ends: 8 [2018-10-01 01:09:34,374 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time [2018-10-01 01:09:34,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2018-10-01 01:09:34,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2018-10-01 01:09:34,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2018-10-01 01:09:34,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2018-10-01 01:09:34,378 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 5 [2018-10-01 01:09:34,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:09:34,378 INFO L480 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2018-10-01 01:09:34,378 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-01 01:09:34,378 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2018-10-01 01:09:34,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2018-10-01 01:09:34,379 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:09:34,379 INFO L375 BasicCegarLoop]: trace histogram [3, 2, 1, 1] [2018-10-01 01:09:34,379 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:09:34,380 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:09:34,380 INFO L82 PathProgramCache]: Analyzing trace with hash 1862993124, now seen corresponding path program 2 times [2018-10-01 01:09:34,380 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:09:34,380 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:09:34,381 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:09:34,382 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:09:34,382 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:09:34,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:09:34,494 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:09:34,495 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:09:34,495 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:09:34,511 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 01:09:34,537 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 01:09:34,538 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:09:34,539 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:09:34,619 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:09:34,640 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:09:34,641 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 6 [2018-10-01 01:09:34,641 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-01 01:09:34,641 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-01 01:09:34,642 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:09:34,642 INFO L87 Difference]: Start difference. First operand 8 states and 8 transitions. Second operand 8 states. [2018-10-01 01:09:34,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:09:35,000 INFO L93 Difference]: Finished difference Result 11 states and 11 transitions. [2018-10-01 01:09:35,001 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-01 01:09:35,002 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 7 [2018-10-01 01:09:35,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:09:35,002 INFO L225 Difference]: With dead ends: 11 [2018-10-01 01:09:35,003 INFO L226 Difference]: Without dead ends: 10 [2018-10-01 01:09:35,003 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time [2018-10-01 01:09:35,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2018-10-01 01:09:35,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2018-10-01 01:09:35,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2018-10-01 01:09:35,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 10 transitions. [2018-10-01 01:09:35,006 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 10 transitions. Word has length 7 [2018-10-01 01:09:35,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:09:35,007 INFO L480 AbstractCegarLoop]: Abstraction has 10 states and 10 transitions. [2018-10-01 01:09:35,007 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-10-01 01:09:35,007 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 10 transitions. [2018-10-01 01:09:35,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2018-10-01 01:09:35,008 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:09:35,008 INFO L375 BasicCegarLoop]: trace histogram [4, 3, 1, 1] [2018-10-01 01:09:35,008 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:09:35,009 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:09:35,009 INFO L82 PathProgramCache]: Analyzing trace with hash -664969178, now seen corresponding path program 3 times [2018-10-01 01:09:35,009 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:09:35,009 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:09:35,010 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:09:35,011 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:09:35,011 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:09:35,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:09:35,177 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:09:35,178 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:09:35,178 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:09:35,186 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 01:09:35,197 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2018-10-01 01:09:35,197 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:09:35,198 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:09:35,303 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:09:35,323 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:09:35,324 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2018-10-01 01:09:35,324 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-01 01:09:35,325 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-01 01:09:35,325 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:09:35,325 INFO L87 Difference]: Start difference. First operand 10 states and 10 transitions. Second operand 10 states. [2018-10-01 01:09:35,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:09:35,446 INFO L93 Difference]: Finished difference Result 13 states and 13 transitions. [2018-10-01 01:09:35,446 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-01 01:09:35,446 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 9 [2018-10-01 01:09:35,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:09:35,447 INFO L225 Difference]: With dead ends: 13 [2018-10-01 01:09:35,448 INFO L226 Difference]: Without dead ends: 12 [2018-10-01 01:09:35,448 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time [2018-10-01 01:09:35,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2018-10-01 01:09:35,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2018-10-01 01:09:35,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2018-10-01 01:09:35,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2018-10-01 01:09:35,453 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 9 [2018-10-01 01:09:35,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:09:35,453 INFO L480 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2018-10-01 01:09:35,454 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-01 01:09:35,454 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2018-10-01 01:09:35,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-10-01 01:09:35,454 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:09:35,455 INFO L375 BasicCegarLoop]: trace histogram [5, 4, 1, 1] [2018-10-01 01:09:35,455 INFO L423 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:09:35,455 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:09:35,455 INFO L82 PathProgramCache]: Analyzing trace with hash 914748136, now seen corresponding path program 4 times [2018-10-01 01:09:35,455 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:09:35,456 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:09:35,457 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:09:35,457 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:09:35,457 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:09:35,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:09:35,671 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:09:35,671 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:09:35,672 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:09:35,686 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 01:09:35,722 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 01:09:35,723 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:09:35,726 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:09:35,991 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:09:36,014 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:09:36,014 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2018-10-01 01:09:36,014 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-10-01 01:09:36,015 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-10-01 01:09:36,015 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:09:36,015 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand 12 states. [2018-10-01 01:09:36,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:09:36,215 INFO L93 Difference]: Finished difference Result 15 states and 15 transitions. [2018-10-01 01:09:36,215 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-01 01:09:36,216 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 11 [2018-10-01 01:09:36,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:09:36,217 INFO L225 Difference]: With dead ends: 15 [2018-10-01 01:09:36,217 INFO L226 Difference]: Without dead ends: 14 [2018-10-01 01:09:36,218 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time [2018-10-01 01:09:36,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2018-10-01 01:09:36,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2018-10-01 01:09:36,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2018-10-01 01:09:36,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2018-10-01 01:09:36,222 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 11 [2018-10-01 01:09:36,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:09:36,222 INFO L480 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2018-10-01 01:09:36,222 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-10-01 01:09:36,222 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2018-10-01 01:09:36,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-10-01 01:09:36,223 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:09:36,223 INFO L375 BasicCegarLoop]: trace histogram [6, 5, 1, 1] [2018-10-01 01:09:36,223 INFO L423 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:09:36,224 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:09:36,224 INFO L82 PathProgramCache]: Analyzing trace with hash -1395335894, now seen corresponding path program 5 times [2018-10-01 01:09:36,224 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:09:36,224 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:09:36,225 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:09:36,225 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:09:36,225 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:09:36,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:09:36,333 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:09:36,333 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:09:36,333 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:09:36,341 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 01:09:36,349 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2018-10-01 01:09:36,349 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:09:36,351 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:09:36,469 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:09:36,492 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:09:36,492 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 12 [2018-10-01 01:09:36,493 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-10-01 01:09:36,493 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-10-01 01:09:36,493 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:09:36,493 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand 14 states. [2018-10-01 01:09:36,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:09:36,697 INFO L93 Difference]: Finished difference Result 17 states and 17 transitions. [2018-10-01 01:09:36,699 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-01 01:09:36,699 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 13 [2018-10-01 01:09:36,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:09:36,700 INFO L225 Difference]: With dead ends: 17 [2018-10-01 01:09:36,701 INFO L226 Difference]: Without dead ends: 16 [2018-10-01 01:09:36,701 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time [2018-10-01 01:09:36,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2018-10-01 01:09:36,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2018-10-01 01:09:36,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2018-10-01 01:09:36,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2018-10-01 01:09:36,706 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 13 [2018-10-01 01:09:36,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:09:36,707 INFO L480 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2018-10-01 01:09:36,707 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-10-01 01:09:36,707 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2018-10-01 01:09:36,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-10-01 01:09:36,708 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:09:36,708 INFO L375 BasicCegarLoop]: trace histogram [7, 6, 1, 1] [2018-10-01 01:09:36,708 INFO L423 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:09:36,708 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:09:36,708 INFO L82 PathProgramCache]: Analyzing trace with hash -887996692, now seen corresponding path program 6 times [2018-10-01 01:09:36,709 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:09:36,709 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:09:36,710 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:09:36,710 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:09:36,710 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:09:36,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:09:36,833 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:09:36,834 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:09:36,834 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:09:36,842 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 01:09:36,851 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2018-10-01 01:09:36,851 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:09:36,852 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:09:37,138 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:09:37,163 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:09:37,163 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2018-10-01 01:09:37,164 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-10-01 01:09:37,164 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-10-01 01:09:37,164 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:09:37,165 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand 16 states. [2018-10-01 01:09:37,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:09:37,284 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2018-10-01 01:09:37,285 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-01 01:09:37,285 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 15 [2018-10-01 01:09:37,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:09:37,286 INFO L225 Difference]: With dead ends: 19 [2018-10-01 01:09:37,287 INFO L226 Difference]: Without dead ends: 18 [2018-10-01 01:09:37,287 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time [2018-10-01 01:09:37,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2018-10-01 01:09:37,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2018-10-01 01:09:37,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2018-10-01 01:09:37,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2018-10-01 01:09:37,292 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 15 [2018-10-01 01:09:37,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:09:37,292 INFO L480 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2018-10-01 01:09:37,292 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-10-01 01:09:37,293 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2018-10-01 01:09:37,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-10-01 01:09:37,293 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:09:37,293 INFO L375 BasicCegarLoop]: trace histogram [8, 7, 1, 1] [2018-10-01 01:09:37,294 INFO L423 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:09:37,294 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:09:37,294 INFO L82 PathProgramCache]: Analyzing trace with hash 1333671982, now seen corresponding path program 7 times [2018-10-01 01:09:37,294 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:09:37,294 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:09:37,295 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:09:37,295 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:09:37,296 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:09:37,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:09:37,398 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:09:37,399 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:09:37,399 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:09:37,409 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:09:37,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:09:37,417 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:09:37,529 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:09:37,549 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:09:37,549 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 16 [2018-10-01 01:09:37,550 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-10-01 01:09:37,550 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-10-01 01:09:37,550 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:09:37,550 INFO L87 Difference]: Start difference. First operand 18 states and 18 transitions. Second operand 18 states. [2018-10-01 01:09:37,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:09:37,683 INFO L93 Difference]: Finished difference Result 21 states and 21 transitions. [2018-10-01 01:09:37,683 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-01 01:09:37,683 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 17 [2018-10-01 01:09:37,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:09:37,684 INFO L225 Difference]: With dead ends: 21 [2018-10-01 01:09:37,684 INFO L226 Difference]: Without dead ends: 20 [2018-10-01 01:09:37,685 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time [2018-10-01 01:09:37,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2018-10-01 01:09:37,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2018-10-01 01:09:37,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2018-10-01 01:09:37,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 20 transitions. [2018-10-01 01:09:37,689 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 20 transitions. Word has length 17 [2018-10-01 01:09:37,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:09:37,689 INFO L480 AbstractCegarLoop]: Abstraction has 20 states and 20 transitions. [2018-10-01 01:09:37,689 INFO L481 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-10-01 01:09:37,689 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 20 transitions. [2018-10-01 01:09:37,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-10-01 01:09:37,690 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:09:37,690 INFO L375 BasicCegarLoop]: trace histogram [9, 8, 1, 1] [2018-10-01 01:09:37,690 INFO L423 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:09:37,690 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:09:37,691 INFO L82 PathProgramCache]: Analyzing trace with hash 1758521584, now seen corresponding path program 8 times [2018-10-01 01:09:37,691 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:09:37,691 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:09:37,692 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:09:37,692 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:09:37,692 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:09:37,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:09:37,833 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:09:37,833 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:09:37,834 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:09:37,846 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 01:09:37,853 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 01:09:37,853 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:09:37,854 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:09:37,980 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:09:38,003 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:09:38,004 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2018-10-01 01:09:38,004 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-10-01 01:09:38,004 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-10-01 01:09:38,005 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:09:38,005 INFO L87 Difference]: Start difference. First operand 20 states and 20 transitions. Second operand 20 states. [2018-10-01 01:09:38,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:09:38,179 INFO L93 Difference]: Finished difference Result 23 states and 23 transitions. [2018-10-01 01:09:38,181 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-10-01 01:09:38,182 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 19 [2018-10-01 01:09:38,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:09:38,182 INFO L225 Difference]: With dead ends: 23 [2018-10-01 01:09:38,182 INFO L226 Difference]: Without dead ends: 22 [2018-10-01 01:09:38,183 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time [2018-10-01 01:09:38,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2018-10-01 01:09:38,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2018-10-01 01:09:38,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2018-10-01 01:09:38,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 22 transitions. [2018-10-01 01:09:38,186 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 22 transitions. Word has length 19 [2018-10-01 01:09:38,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:09:38,187 INFO L480 AbstractCegarLoop]: Abstraction has 22 states and 22 transitions. [2018-10-01 01:09:38,187 INFO L481 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-10-01 01:09:38,187 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 22 transitions. [2018-10-01 01:09:38,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-10-01 01:09:38,188 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:09:38,188 INFO L375 BasicCegarLoop]: trace histogram [10, 9, 1, 1] [2018-10-01 01:09:38,188 INFO L423 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:09:38,188 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:09:38,188 INFO L82 PathProgramCache]: Analyzing trace with hash 2017095986, now seen corresponding path program 9 times [2018-10-01 01:09:38,188 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:09:38,189 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:09:38,189 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:09:38,190 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:09:38,190 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:09:38,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:09:38,333 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:09:38,334 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:09:38,334 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:09:38,342 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 01:09:38,380 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2018-10-01 01:09:38,381 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:09:38,383 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:09:38,630 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:09:38,652 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:09:38,652 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 20 [2018-10-01 01:09:38,653 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-10-01 01:09:38,653 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-10-01 01:09:38,653 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:09:38,653 INFO L87 Difference]: Start difference. First operand 22 states and 22 transitions. Second operand 22 states. [2018-10-01 01:09:39,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:09:39,009 INFO L93 Difference]: Finished difference Result 25 states and 25 transitions. [2018-10-01 01:09:39,010 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-10-01 01:09:39,010 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 21 [2018-10-01 01:09:39,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:09:39,010 INFO L225 Difference]: With dead ends: 25 [2018-10-01 01:09:39,011 INFO L226 Difference]: Without dead ends: 24 [2018-10-01 01:09:39,011 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time [2018-10-01 01:09:39,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2018-10-01 01:09:39,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2018-10-01 01:09:39,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2018-10-01 01:09:39,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 24 transitions. [2018-10-01 01:09:39,016 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 24 transitions. Word has length 21 [2018-10-01 01:09:39,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:09:39,016 INFO L480 AbstractCegarLoop]: Abstraction has 24 states and 24 transitions. [2018-10-01 01:09:39,016 INFO L481 AbstractCegarLoop]: Interpolant automaton has 22 states. [2018-10-01 01:09:39,017 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 24 transitions. [2018-10-01 01:09:39,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-10-01 01:09:39,017 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:09:39,017 INFO L375 BasicCegarLoop]: trace histogram [11, 10, 1, 1] [2018-10-01 01:09:39,018 INFO L423 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:09:39,018 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:09:39,018 INFO L82 PathProgramCache]: Analyzing trace with hash 1398993140, now seen corresponding path program 10 times [2018-10-01 01:09:39,018 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:09:39,018 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:09:39,019 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:09:39,019 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:09:39,019 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:09:39,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:09:39,132 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:09:39,133 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:09:39,133 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:09:39,140 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 01:09:39,148 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 01:09:39,148 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:09:39,151 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:09:39,468 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:09:39,491 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:09:39,491 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 22 [2018-10-01 01:09:39,491 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2018-10-01 01:09:39,492 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2018-10-01 01:09:39,492 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:09:39,493 INFO L87 Difference]: Start difference. First operand 24 states and 24 transitions. Second operand 24 states. [2018-10-01 01:09:39,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:09:39,714 INFO L93 Difference]: Finished difference Result 27 states and 27 transitions. [2018-10-01 01:09:39,714 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-10-01 01:09:39,715 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 23 [2018-10-01 01:09:39,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:09:39,716 INFO L225 Difference]: With dead ends: 27 [2018-10-01 01:09:39,716 INFO L226 Difference]: Without dead ends: 26 [2018-10-01 01:09:39,717 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time [2018-10-01 01:09:39,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2018-10-01 01:09:39,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2018-10-01 01:09:39,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2018-10-01 01:09:39,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 26 transitions. [2018-10-01 01:09:39,724 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 26 transitions. Word has length 23 [2018-10-01 01:09:39,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:09:39,724 INFO L480 AbstractCegarLoop]: Abstraction has 26 states and 26 transitions. [2018-10-01 01:09:39,724 INFO L481 AbstractCegarLoop]: Interpolant automaton has 24 states. [2018-10-01 01:09:39,725 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 26 transitions. [2018-10-01 01:09:39,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-10-01 01:09:39,725 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:09:39,725 INFO L375 BasicCegarLoop]: trace histogram [12, 11, 1, 1] [2018-10-01 01:09:39,726 INFO L423 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:09:39,726 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:09:39,726 INFO L82 PathProgramCache]: Analyzing trace with hash 107644982, now seen corresponding path program 11 times [2018-10-01 01:09:39,726 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:09:39,726 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:09:39,727 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:09:39,727 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:09:39,728 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:09:39,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:09:39,932 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 0 proven. 132 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:09:39,932 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:09:39,932 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:09:39,940 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 01:09:39,998 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2018-10-01 01:09:39,998 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:09:40,000 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:09:40,273 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 0 proven. 132 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:09:40,293 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:09:40,293 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 24 [2018-10-01 01:09:40,294 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2018-10-01 01:09:40,294 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2018-10-01 01:09:40,294 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:09:40,294 INFO L87 Difference]: Start difference. First operand 26 states and 26 transitions. Second operand 26 states. [2018-10-01 01:09:40,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:09:40,484 INFO L93 Difference]: Finished difference Result 29 states and 29 transitions. [2018-10-01 01:09:40,484 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-10-01 01:09:40,484 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 25 [2018-10-01 01:09:40,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:09:40,485 INFO L225 Difference]: With dead ends: 29 [2018-10-01 01:09:40,485 INFO L226 Difference]: Without dead ends: 28 [2018-10-01 01:09:40,486 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time [2018-10-01 01:09:40,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2018-10-01 01:09:40,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2018-10-01 01:09:40,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2018-10-01 01:09:40,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 28 transitions. [2018-10-01 01:09:40,492 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 28 transitions. Word has length 25 [2018-10-01 01:09:40,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:09:40,492 INFO L480 AbstractCegarLoop]: Abstraction has 28 states and 28 transitions. [2018-10-01 01:09:40,492 INFO L481 AbstractCegarLoop]: Interpolant automaton has 26 states. [2018-10-01 01:09:40,492 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 28 transitions. [2018-10-01 01:09:40,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-10-01 01:09:40,493 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:09:40,493 INFO L375 BasicCegarLoop]: trace histogram [13, 12, 1, 1] [2018-10-01 01:09:40,493 INFO L423 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:09:40,493 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:09:40,493 INFO L82 PathProgramCache]: Analyzing trace with hash 367613688, now seen corresponding path program 12 times [2018-10-01 01:09:40,493 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:09:40,494 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:09:40,494 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:09:40,495 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:09:40,495 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:09:40,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:09:40,616 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 0 proven. 156 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:09:40,616 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:09:40,617 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:09:40,631 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 01:09:40,730 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2018-10-01 01:09:40,730 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:09:40,732 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:09:40,973 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 0 proven. 156 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:09:40,994 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:09:40,994 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 26 [2018-10-01 01:09:40,994 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2018-10-01 01:09:40,995 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2018-10-01 01:09:40,995 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:09:40,995 INFO L87 Difference]: Start difference. First operand 28 states and 28 transitions. Second operand 28 states. [2018-10-01 01:09:41,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:09:41,244 INFO L93 Difference]: Finished difference Result 31 states and 31 transitions. [2018-10-01 01:09:41,244 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-10-01 01:09:41,245 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 27 [2018-10-01 01:09:41,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:09:41,246 INFO L225 Difference]: With dead ends: 31 [2018-10-01 01:09:41,246 INFO L226 Difference]: Without dead ends: 30 [2018-10-01 01:09:41,246 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time [2018-10-01 01:09:41,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2018-10-01 01:09:41,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2018-10-01 01:09:41,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2018-10-01 01:09:41,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 30 transitions. [2018-10-01 01:09:41,252 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 30 transitions. Word has length 27 [2018-10-01 01:09:41,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:09:41,252 INFO L480 AbstractCegarLoop]: Abstraction has 30 states and 30 transitions. [2018-10-01 01:09:41,252 INFO L481 AbstractCegarLoop]: Interpolant automaton has 28 states. [2018-10-01 01:09:41,252 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 30 transitions. [2018-10-01 01:09:41,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-10-01 01:09:41,253 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:09:41,253 INFO L375 BasicCegarLoop]: trace histogram [14, 13, 1, 1] [2018-10-01 01:09:41,253 INFO L423 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:09:41,253 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:09:41,253 INFO L82 PathProgramCache]: Analyzing trace with hash 1089436986, now seen corresponding path program 13 times [2018-10-01 01:09:41,253 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:09:41,254 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:09:41,254 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:09:41,255 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:09:41,255 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:09:41,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:09:41,450 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 0 proven. 182 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:09:41,451 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:09:41,451 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:09:41,458 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:09:41,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:09:41,469 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:09:41,889 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 0 proven. 182 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:09:41,909 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:09:41,909 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 28 [2018-10-01 01:09:41,909 INFO L459 AbstractCegarLoop]: Interpolant automaton has 30 states [2018-10-01 01:09:41,910 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2018-10-01 01:09:41,910 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:09:41,910 INFO L87 Difference]: Start difference. First operand 30 states and 30 transitions. Second operand 30 states. [2018-10-01 01:09:42,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:09:42,270 INFO L93 Difference]: Finished difference Result 33 states and 33 transitions. [2018-10-01 01:09:42,270 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-10-01 01:09:42,270 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 29 [2018-10-01 01:09:42,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:09:42,271 INFO L225 Difference]: With dead ends: 33 [2018-10-01 01:09:42,271 INFO L226 Difference]: Without dead ends: 32 [2018-10-01 01:09:42,272 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time [2018-10-01 01:09:42,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2018-10-01 01:09:42,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2018-10-01 01:09:42,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2018-10-01 01:09:42,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 32 transitions. [2018-10-01 01:09:42,277 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 32 transitions. Word has length 29 [2018-10-01 01:09:42,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:09:42,277 INFO L480 AbstractCegarLoop]: Abstraction has 32 states and 32 transitions. [2018-10-01 01:09:42,277 INFO L481 AbstractCegarLoop]: Interpolant automaton has 30 states. [2018-10-01 01:09:42,277 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 32 transitions. [2018-10-01 01:09:42,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2018-10-01 01:09:42,278 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:09:42,278 INFO L375 BasicCegarLoop]: trace histogram [15, 14, 1, 1] [2018-10-01 01:09:42,278 INFO L423 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:09:42,279 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:09:42,279 INFO L82 PathProgramCache]: Analyzing trace with hash -1023075588, now seen corresponding path program 14 times [2018-10-01 01:09:42,279 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:09:42,279 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:09:42,280 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:09:42,280 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:09:42,280 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:09:42,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:09:42,477 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:09:42,477 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:09:42,477 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:09:42,487 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 01:09:42,498 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 01:09:42,498 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:09:42,500 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:09:42,745 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:09:42,767 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:09:42,767 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 30 [2018-10-01 01:09:42,767 INFO L459 AbstractCegarLoop]: Interpolant automaton has 32 states [2018-10-01 01:09:42,768 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2018-10-01 01:09:42,768 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:09:42,768 INFO L87 Difference]: Start difference. First operand 32 states and 32 transitions. Second operand 32 states. [2018-10-01 01:09:43,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:09:43,859 INFO L93 Difference]: Finished difference Result 35 states and 35 transitions. [2018-10-01 01:09:43,859 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-10-01 01:09:43,859 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 31 [2018-10-01 01:09:43,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:09:43,860 INFO L225 Difference]: With dead ends: 35 [2018-10-01 01:09:43,860 INFO L226 Difference]: Without dead ends: 34 [2018-10-01 01:09:43,860 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time [2018-10-01 01:09:43,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2018-10-01 01:09:43,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2018-10-01 01:09:43,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2018-10-01 01:09:43,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 34 transitions. [2018-10-01 01:09:43,864 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 34 transitions. Word has length 31 [2018-10-01 01:09:43,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:09:43,865 INFO L480 AbstractCegarLoop]: Abstraction has 34 states and 34 transitions. [2018-10-01 01:09:43,865 INFO L481 AbstractCegarLoop]: Interpolant automaton has 32 states. [2018-10-01 01:09:43,865 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 34 transitions. [2018-10-01 01:09:43,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2018-10-01 01:09:43,866 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:09:43,866 INFO L375 BasicCegarLoop]: trace histogram [16, 15, 1, 1] [2018-10-01 01:09:43,866 INFO L423 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:09:43,866 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:09:43,866 INFO L82 PathProgramCache]: Analyzing trace with hash 371871806, now seen corresponding path program 15 times [2018-10-01 01:09:43,867 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:09:43,867 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:09:43,867 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:09:43,867 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:09:43,868 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:09:43,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:09:44,086 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 0 proven. 240 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:09:44,087 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:09:44,087 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:09:44,095 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 01:09:44,268 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) [2018-10-01 01:09:44,269 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:09:44,271 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:09:44,952 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 0 proven. 240 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:09:44,973 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:09:44,973 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 32 [2018-10-01 01:09:44,973 INFO L459 AbstractCegarLoop]: Interpolant automaton has 34 states [2018-10-01 01:09:44,974 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2018-10-01 01:09:44,974 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:09:44,974 INFO L87 Difference]: Start difference. First operand 34 states and 34 transitions. Second operand 34 states. [2018-10-01 01:09:45,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:09:45,207 INFO L93 Difference]: Finished difference Result 37 states and 37 transitions. [2018-10-01 01:09:45,207 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-10-01 01:09:45,207 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 33 [2018-10-01 01:09:45,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:09:45,208 INFO L225 Difference]: With dead ends: 37 [2018-10-01 01:09:45,209 INFO L226 Difference]: Without dead ends: 36 [2018-10-01 01:09:45,209 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s Time [2018-10-01 01:09:45,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2018-10-01 01:09:45,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2018-10-01 01:09:45,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2018-10-01 01:09:45,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 36 transitions. [2018-10-01 01:09:45,214 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 36 transitions. Word has length 33 [2018-10-01 01:09:45,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:09:45,214 INFO L480 AbstractCegarLoop]: Abstraction has 36 states and 36 transitions. [2018-10-01 01:09:45,214 INFO L481 AbstractCegarLoop]: Interpolant automaton has 34 states. [2018-10-01 01:09:45,214 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 36 transitions. [2018-10-01 01:09:45,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2018-10-01 01:09:45,215 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:09:45,215 INFO L375 BasicCegarLoop]: trace histogram [17, 16, 1, 1] [2018-10-01 01:09:45,215 INFO L423 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:09:45,216 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:09:45,216 INFO L82 PathProgramCache]: Analyzing trace with hash 886521088, now seen corresponding path program 16 times [2018-10-01 01:09:45,216 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:09:45,216 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:09:45,217 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:09:45,217 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:09:45,217 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:09:45,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:09:45,367 INFO L134 CoverageAnalysis]: Checked inductivity of 272 backedges. 0 proven. 272 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:09:45,367 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:09:45,367 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:09:45,377 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 01:09:45,387 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 01:09:45,387 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:09:45,388 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:09:45,610 INFO L134 CoverageAnalysis]: Checked inductivity of 272 backedges. 0 proven. 272 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:09:45,632 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:09:45,633 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 34 [2018-10-01 01:09:45,633 INFO L459 AbstractCegarLoop]: Interpolant automaton has 36 states [2018-10-01 01:09:45,633 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2018-10-01 01:09:45,633 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:09:45,633 INFO L87 Difference]: Start difference. First operand 36 states and 36 transitions. Second operand 36 states. [2018-10-01 01:09:45,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:09:45,986 INFO L93 Difference]: Finished difference Result 39 states and 39 transitions. [2018-10-01 01:09:45,986 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-10-01 01:09:45,986 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 35 [2018-10-01 01:09:45,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:09:45,987 INFO L225 Difference]: With dead ends: 39 [2018-10-01 01:09:45,987 INFO L226 Difference]: Without dead ends: 38 [2018-10-01 01:09:45,987 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time [2018-10-01 01:09:45,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2018-10-01 01:09:45,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2018-10-01 01:09:45,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2018-10-01 01:09:45,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 38 transitions. [2018-10-01 01:09:45,991 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 38 transitions. Word has length 35 [2018-10-01 01:09:45,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:09:45,992 INFO L480 AbstractCegarLoop]: Abstraction has 38 states and 38 transitions. [2018-10-01 01:09:45,992 INFO L481 AbstractCegarLoop]: Interpolant automaton has 36 states. [2018-10-01 01:09:45,992 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 38 transitions. [2018-10-01 01:09:45,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2018-10-01 01:09:45,992 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:09:45,993 INFO L375 BasicCegarLoop]: trace histogram [18, 17, 1, 1] [2018-10-01 01:09:45,993 INFO L423 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:09:45,993 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:09:45,993 INFO L82 PathProgramCache]: Analyzing trace with hash 1543242050, now seen corresponding path program 17 times [2018-10-01 01:09:45,993 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:09:45,993 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:09:45,994 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:09:45,994 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:09:45,994 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:09:46,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:09:46,301 INFO L134 CoverageAnalysis]: Checked inductivity of 306 backedges. 0 proven. 306 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:09:46,301 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:09:46,301 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:09:46,310 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 01:09:46,385 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 18 check-sat command(s) [2018-10-01 01:09:46,385 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:09:46,387 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:09:46,663 INFO L134 CoverageAnalysis]: Checked inductivity of 306 backedges. 0 proven. 306 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:09:46,684 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:09:46,684 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 36 [2018-10-01 01:09:46,685 INFO L459 AbstractCegarLoop]: Interpolant automaton has 38 states [2018-10-01 01:09:46,685 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2018-10-01 01:09:46,685 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:09:46,685 INFO L87 Difference]: Start difference. First operand 38 states and 38 transitions. Second operand 38 states. [2018-10-01 01:09:47,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:09:47,014 INFO L93 Difference]: Finished difference Result 41 states and 41 transitions. [2018-10-01 01:09:47,014 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-10-01 01:09:47,014 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 37 [2018-10-01 01:09:47,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:09:47,015 INFO L225 Difference]: With dead ends: 41 [2018-10-01 01:09:47,015 INFO L226 Difference]: Without dead ends: 40 [2018-10-01 01:09:47,016 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time [2018-10-01 01:09:47,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2018-10-01 01:09:47,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2018-10-01 01:09:47,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2018-10-01 01:09:47,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 40 transitions. [2018-10-01 01:09:47,023 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 40 transitions. Word has length 37 [2018-10-01 01:09:47,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:09:47,023 INFO L480 AbstractCegarLoop]: Abstraction has 40 states and 40 transitions. [2018-10-01 01:09:47,023 INFO L481 AbstractCegarLoop]: Interpolant automaton has 38 states. [2018-10-01 01:09:47,023 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 40 transitions. [2018-10-01 01:09:47,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2018-10-01 01:09:47,024 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:09:47,024 INFO L375 BasicCegarLoop]: trace histogram [19, 18, 1, 1] [2018-10-01 01:09:47,024 INFO L423 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:09:47,025 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:09:47,025 INFO L82 PathProgramCache]: Analyzing trace with hash 1291894020, now seen corresponding path program 18 times [2018-10-01 01:09:47,025 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:09:47,025 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:09:47,026 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:09:47,026 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:09:47,026 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:09:47,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:09:47,467 INFO L134 CoverageAnalysis]: Checked inductivity of 342 backedges. 0 proven. 342 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:09:47,467 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:09:47,467 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:09:47,475 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 01:09:47,494 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s) [2018-10-01 01:09:47,494 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:09:47,496 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:09:47,814 INFO L134 CoverageAnalysis]: Checked inductivity of 342 backedges. 0 proven. 342 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:09:47,835 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:09:47,835 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 38 [2018-10-01 01:09:47,836 INFO L459 AbstractCegarLoop]: Interpolant automaton has 40 states [2018-10-01 01:09:47,836 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2018-10-01 01:09:47,836 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:09:47,837 INFO L87 Difference]: Start difference. First operand 40 states and 40 transitions. Second operand 40 states. [2018-10-01 01:09:48,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:09:48,163 INFO L93 Difference]: Finished difference Result 43 states and 43 transitions. [2018-10-01 01:09:48,164 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-10-01 01:09:48,165 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 39 [2018-10-01 01:09:48,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:09:48,166 INFO L225 Difference]: With dead ends: 43 [2018-10-01 01:09:48,166 INFO L226 Difference]: Without dead ends: 42 [2018-10-01 01:09:48,166 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s Time [2018-10-01 01:09:48,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2018-10-01 01:09:48,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2018-10-01 01:09:48,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2018-10-01 01:09:48,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 42 transitions. [2018-10-01 01:09:48,171 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 42 transitions. Word has length 39 [2018-10-01 01:09:48,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:09:48,171 INFO L480 AbstractCegarLoop]: Abstraction has 42 states and 42 transitions. [2018-10-01 01:09:48,171 INFO L481 AbstractCegarLoop]: Interpolant automaton has 40 states. [2018-10-01 01:09:48,171 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 42 transitions. [2018-10-01 01:09:48,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2018-10-01 01:09:48,172 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:09:48,172 INFO L375 BasicCegarLoop]: trace histogram [20, 19, 1, 1] [2018-10-01 01:09:48,172 INFO L423 AbstractCegarLoop]: === Iteration 20 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:09:48,173 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:09:48,173 INFO L82 PathProgramCache]: Analyzing trace with hash 264605766, now seen corresponding path program 19 times [2018-10-01 01:09:48,173 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:09:48,173 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:09:48,174 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:09:48,174 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:09:48,174 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:09:48,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:09:48,333 INFO L134 CoverageAnalysis]: Checked inductivity of 380 backedges. 0 proven. 380 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:09:48,334 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:09:48,334 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:09:48,341 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:09:48,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:09:48,367 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:09:48,662 INFO L134 CoverageAnalysis]: Checked inductivity of 380 backedges. 0 proven. 380 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:09:48,682 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:09:48,682 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 40 [2018-10-01 01:09:48,683 INFO L459 AbstractCegarLoop]: Interpolant automaton has 42 states [2018-10-01 01:09:48,683 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2018-10-01 01:09:48,683 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:09:48,683 INFO L87 Difference]: Start difference. First operand 42 states and 42 transitions. Second operand 42 states. [2018-10-01 01:09:49,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:09:49,024 INFO L93 Difference]: Finished difference Result 45 states and 45 transitions. [2018-10-01 01:09:49,024 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-10-01 01:09:49,025 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 41 [2018-10-01 01:09:49,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:09:49,026 INFO L225 Difference]: With dead ends: 45 [2018-10-01 01:09:49,026 INFO L226 Difference]: Without dead ends: 44 [2018-10-01 01:09:49,026 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time [2018-10-01 01:09:49,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2018-10-01 01:09:49,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2018-10-01 01:09:49,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2018-10-01 01:09:49,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 44 transitions. [2018-10-01 01:09:49,033 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 44 transitions. Word has length 41 [2018-10-01 01:09:49,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:09:49,033 INFO L480 AbstractCegarLoop]: Abstraction has 44 states and 44 transitions. [2018-10-01 01:09:49,033 INFO L481 AbstractCegarLoop]: Interpolant automaton has 42 states. [2018-10-01 01:09:49,033 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 44 transitions. [2018-10-01 01:09:49,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2018-10-01 01:09:49,034 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:09:49,034 INFO L375 BasicCegarLoop]: trace histogram [21, 20, 1, 1] [2018-10-01 01:09:49,034 INFO L423 AbstractCegarLoop]: === Iteration 21 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:09:49,034 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:09:49,034 INFO L82 PathProgramCache]: Analyzing trace with hash 883071752, now seen corresponding path program 20 times [2018-10-01 01:09:49,035 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:09:49,035 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:09:49,035 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:09:49,035 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:09:49,035 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:09:49,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:09:49,273 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 420 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:09:49,273 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:09:49,273 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:09:49,282 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 01:09:49,303 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 01:09:49,303 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:09:49,308 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:09:49,678 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 420 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:09:49,701 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:09:49,702 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 42 [2018-10-01 01:09:49,702 INFO L459 AbstractCegarLoop]: Interpolant automaton has 44 states [2018-10-01 01:09:49,702 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2018-10-01 01:09:49,702 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:09:49,702 INFO L87 Difference]: Start difference. First operand 44 states and 44 transitions. Second operand 44 states. [2018-10-01 01:09:50,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:09:50,085 INFO L93 Difference]: Finished difference Result 47 states and 47 transitions. [2018-10-01 01:09:50,085 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-10-01 01:09:50,085 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 43 [2018-10-01 01:09:50,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:09:50,086 INFO L225 Difference]: With dead ends: 47 [2018-10-01 01:09:50,086 INFO L226 Difference]: Without dead ends: 46 [2018-10-01 01:09:50,087 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time [2018-10-01 01:09:50,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2018-10-01 01:09:50,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2018-10-01 01:09:50,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2018-10-01 01:09:50,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 46 transitions. [2018-10-01 01:09:50,093 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 46 transitions. Word has length 43 [2018-10-01 01:09:50,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:09:50,094 INFO L480 AbstractCegarLoop]: Abstraction has 46 states and 46 transitions. [2018-10-01 01:09:50,094 INFO L481 AbstractCegarLoop]: Interpolant automaton has 44 states. [2018-10-01 01:09:50,094 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 46 transitions. [2018-10-01 01:09:50,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2018-10-01 01:09:50,095 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:09:50,095 INFO L375 BasicCegarLoop]: trace histogram [22, 21, 1, 1] [2018-10-01 01:09:50,095 INFO L423 AbstractCegarLoop]: === Iteration 22 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:09:50,095 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:09:50,095 INFO L82 PathProgramCache]: Analyzing trace with hash -1771569846, now seen corresponding path program 21 times [2018-10-01 01:09:50,096 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:09:50,096 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:09:50,096 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:09:50,096 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:09:50,097 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:09:50,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:09:50,834 INFO L134 CoverageAnalysis]: Checked inductivity of 462 backedges. 0 proven. 462 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:09:50,834 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:09:50,834 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:09:50,843 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 01:09:50,862 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 22 check-sat command(s) [2018-10-01 01:09:50,862 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:09:50,864 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:09:51,269 INFO L134 CoverageAnalysis]: Checked inductivity of 462 backedges. 0 proven. 462 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:09:51,290 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:09:51,291 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 44 [2018-10-01 01:09:51,291 INFO L459 AbstractCegarLoop]: Interpolant automaton has 46 states [2018-10-01 01:09:51,291 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2018-10-01 01:09:51,291 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:09:51,291 INFO L87 Difference]: Start difference. First operand 46 states and 46 transitions. Second operand 46 states. [2018-10-01 01:09:51,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:09:51,639 INFO L93 Difference]: Finished difference Result 49 states and 49 transitions. [2018-10-01 01:09:51,642 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-10-01 01:09:51,642 INFO L78 Accepts]: Start accepts. Automaton has 46 states. Word has length 45 [2018-10-01 01:09:51,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:09:51,643 INFO L225 Difference]: With dead ends: 49 [2018-10-01 01:09:51,643 INFO L226 Difference]: Without dead ends: 48 [2018-10-01 01:09:51,643 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s Time [2018-10-01 01:09:51,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2018-10-01 01:09:51,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2018-10-01 01:09:51,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2018-10-01 01:09:51,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 48 transitions. [2018-10-01 01:09:51,648 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 48 transitions. Word has length 45 [2018-10-01 01:09:51,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:09:51,648 INFO L480 AbstractCegarLoop]: Abstraction has 48 states and 48 transitions. [2018-10-01 01:09:51,649 INFO L481 AbstractCegarLoop]: Interpolant automaton has 46 states. [2018-10-01 01:09:51,649 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 48 transitions. [2018-10-01 01:09:51,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2018-10-01 01:09:51,649 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:09:51,650 INFO L375 BasicCegarLoop]: trace histogram [23, 22, 1, 1] [2018-10-01 01:09:51,650 INFO L423 AbstractCegarLoop]: === Iteration 23 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:09:51,650 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:09:51,650 INFO L82 PathProgramCache]: Analyzing trace with hash -1671571700, now seen corresponding path program 22 times [2018-10-01 01:09:51,650 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:09:51,650 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:09:51,651 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:09:51,651 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:09:51,651 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:09:51,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:09:51,853 INFO L134 CoverageAnalysis]: Checked inductivity of 506 backedges. 0 proven. 506 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:09:51,854 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:09:51,854 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:09:51,863 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 01:09:51,876 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 01:09:51,876 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:09:51,878 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:09:52,140 INFO L134 CoverageAnalysis]: Checked inductivity of 506 backedges. 0 proven. 506 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:09:52,165 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:09:52,166 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 46 [2018-10-01 01:09:52,166 INFO L459 AbstractCegarLoop]: Interpolant automaton has 48 states [2018-10-01 01:09:52,166 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2018-10-01 01:09:52,167 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:09:52,167 INFO L87 Difference]: Start difference. First operand 48 states and 48 transitions. Second operand 48 states. [2018-10-01 01:09:52,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:09:52,500 INFO L93 Difference]: Finished difference Result 51 states and 51 transitions. [2018-10-01 01:09:52,503 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2018-10-01 01:09:52,504 INFO L78 Accepts]: Start accepts. Automaton has 48 states. Word has length 47 [2018-10-01 01:09:52,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:09:52,504 INFO L225 Difference]: With dead ends: 51 [2018-10-01 01:09:52,505 INFO L226 Difference]: Without dead ends: 50 [2018-10-01 01:09:52,505 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time [2018-10-01 01:09:52,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2018-10-01 01:09:52,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2018-10-01 01:09:52,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2018-10-01 01:09:52,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 50 transitions. [2018-10-01 01:09:52,509 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 50 transitions. Word has length 47 [2018-10-01 01:09:52,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:09:52,510 INFO L480 AbstractCegarLoop]: Abstraction has 50 states and 50 transitions. [2018-10-01 01:09:52,510 INFO L481 AbstractCegarLoop]: Interpolant automaton has 48 states. [2018-10-01 01:09:52,510 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 50 transitions. [2018-10-01 01:09:52,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2018-10-01 01:09:52,511 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:09:52,511 INFO L375 BasicCegarLoop]: trace histogram [24, 23, 1, 1] [2018-10-01 01:09:52,511 INFO L423 AbstractCegarLoop]: === Iteration 24 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:09:52,511 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:09:52,511 INFO L82 PathProgramCache]: Analyzing trace with hash -62633906, now seen corresponding path program 23 times [2018-10-01 01:09:52,511 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:09:52,512 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:09:52,512 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:09:52,512 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:09:52,513 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:09:52,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:09:52,757 INFO L134 CoverageAnalysis]: Checked inductivity of 552 backedges. 0 proven. 552 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:09:52,757 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:09:52,757 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:09:52,764 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 01:09:52,787 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 24 check-sat command(s) [2018-10-01 01:09:52,787 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:09:52,789 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:09:53,096 INFO L134 CoverageAnalysis]: Checked inductivity of 552 backedges. 0 proven. 552 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:09:53,116 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:09:53,116 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 48 [2018-10-01 01:09:53,116 INFO L459 AbstractCegarLoop]: Interpolant automaton has 50 states [2018-10-01 01:09:53,117 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2018-10-01 01:09:53,117 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:09:53,117 INFO L87 Difference]: Start difference. First operand 50 states and 50 transitions. Second operand 50 states. [2018-10-01 01:09:53,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:09:53,469 INFO L93 Difference]: Finished difference Result 53 states and 53 transitions. [2018-10-01 01:09:53,469 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2018-10-01 01:09:53,469 INFO L78 Accepts]: Start accepts. Automaton has 50 states. Word has length 49 [2018-10-01 01:09:53,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:09:53,470 INFO L225 Difference]: With dead ends: 53 [2018-10-01 01:09:53,470 INFO L226 Difference]: Without dead ends: 52 [2018-10-01 01:09:53,470 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time [2018-10-01 01:09:53,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2018-10-01 01:09:53,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2018-10-01 01:09:53,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2018-10-01 01:09:53,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 52 transitions. [2018-10-01 01:09:53,477 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 52 transitions. Word has length 49 [2018-10-01 01:09:53,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:09:53,478 INFO L480 AbstractCegarLoop]: Abstraction has 52 states and 52 transitions. [2018-10-01 01:09:53,478 INFO L481 AbstractCegarLoop]: Interpolant automaton has 50 states. [2018-10-01 01:09:53,478 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 52 transitions. [2018-10-01 01:09:53,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2018-10-01 01:09:53,479 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:09:53,479 INFO L375 BasicCegarLoop]: trace histogram [25, 24, 1, 1] [2018-10-01 01:09:53,479 INFO L423 AbstractCegarLoop]: === Iteration 25 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:09:53,479 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:09:53,479 INFO L82 PathProgramCache]: Analyzing trace with hash -61640432, now seen corresponding path program 24 times [2018-10-01 01:09:53,479 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:09:53,480 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:09:53,480 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:09:53,480 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:09:53,480 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:09:53,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:09:53,737 INFO L134 CoverageAnalysis]: Checked inductivity of 600 backedges. 0 proven. 600 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:09:53,738 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:09:53,738 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:09:53,751 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 01:09:53,774 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 25 check-sat command(s) [2018-10-01 01:09:53,774 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:09:53,775 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:09:54,074 INFO L134 CoverageAnalysis]: Checked inductivity of 600 backedges. 0 proven. 600 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:09:54,094 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:09:54,094 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 50 [2018-10-01 01:09:54,094 INFO L459 AbstractCegarLoop]: Interpolant automaton has 52 states [2018-10-01 01:09:54,095 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2018-10-01 01:09:54,095 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:09:54,095 INFO L87 Difference]: Start difference. First operand 52 states and 52 transitions. Second operand 52 states. [2018-10-01 01:09:54,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:09:54,421 INFO L93 Difference]: Finished difference Result 55 states and 55 transitions. [2018-10-01 01:09:54,421 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2018-10-01 01:09:54,421 INFO L78 Accepts]: Start accepts. Automaton has 52 states. Word has length 51 [2018-10-01 01:09:54,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:09:54,422 INFO L225 Difference]: With dead ends: 55 [2018-10-01 01:09:54,422 INFO L226 Difference]: Without dead ends: 54 [2018-10-01 01:09:54,423 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time [2018-10-01 01:09:54,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2018-10-01 01:09:54,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2018-10-01 01:09:54,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2018-10-01 01:09:54,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 54 transitions. [2018-10-01 01:09:54,428 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 54 transitions. Word has length 51 [2018-10-01 01:09:54,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:09:54,428 INFO L480 AbstractCegarLoop]: Abstraction has 54 states and 54 transitions. [2018-10-01 01:09:54,428 INFO L481 AbstractCegarLoop]: Interpolant automaton has 52 states. [2018-10-01 01:09:54,429 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 54 transitions. [2018-10-01 01:09:54,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2018-10-01 01:09:54,429 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:09:54,429 INFO L375 BasicCegarLoop]: trace histogram [26, 25, 1, 1] [2018-10-01 01:09:54,430 INFO L423 AbstractCegarLoop]: === Iteration 26 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:09:54,430 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:09:54,430 INFO L82 PathProgramCache]: Analyzing trace with hash 893088082, now seen corresponding path program 25 times [2018-10-01 01:09:54,430 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:09:54,430 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:09:54,431 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:09:54,431 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:09:54,431 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:09:54,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:09:54,635 INFO L134 CoverageAnalysis]: Checked inductivity of 650 backedges. 0 proven. 650 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:09:54,636 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:09:54,636 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:09:54,643 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:09:54,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:09:54,658 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:09:54,968 INFO L134 CoverageAnalysis]: Checked inductivity of 650 backedges. 0 proven. 650 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:09:54,988 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:09:54,988 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 52 [2018-10-01 01:09:54,988 INFO L459 AbstractCegarLoop]: Interpolant automaton has 54 states [2018-10-01 01:09:54,989 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2018-10-01 01:09:54,989 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:09:54,989 INFO L87 Difference]: Start difference. First operand 54 states and 54 transitions. Second operand 54 states. [2018-10-01 01:09:55,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:09:55,344 INFO L93 Difference]: Finished difference Result 57 states and 57 transitions. [2018-10-01 01:09:55,345 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2018-10-01 01:09:55,345 INFO L78 Accepts]: Start accepts. Automaton has 54 states. Word has length 53 [2018-10-01 01:09:55,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:09:55,346 INFO L225 Difference]: With dead ends: 57 [2018-10-01 01:09:55,346 INFO L226 Difference]: Without dead ends: 56 [2018-10-01 01:09:55,346 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time [2018-10-01 01:09:55,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2018-10-01 01:09:55,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2018-10-01 01:09:55,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2018-10-01 01:09:55,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 56 transitions. [2018-10-01 01:09:55,351 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 56 transitions. Word has length 53 [2018-10-01 01:09:55,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:09:55,351 INFO L480 AbstractCegarLoop]: Abstraction has 56 states and 56 transitions. [2018-10-01 01:09:55,351 INFO L481 AbstractCegarLoop]: Interpolant automaton has 54 states. [2018-10-01 01:09:55,351 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 56 transitions. [2018-10-01 01:09:55,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2018-10-01 01:09:55,352 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:09:55,352 INFO L375 BasicCegarLoop]: trace histogram [27, 26, 1, 1] [2018-10-01 01:09:55,352 INFO L423 AbstractCegarLoop]: === Iteration 27 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:09:55,352 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:09:55,353 INFO L82 PathProgramCache]: Analyzing trace with hash -735811308, now seen corresponding path program 26 times [2018-10-01 01:09:55,353 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:09:55,353 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:09:55,353 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:09:55,354 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:09:55,354 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:09:55,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:09:55,556 INFO L134 CoverageAnalysis]: Checked inductivity of 702 backedges. 0 proven. 702 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:09:55,556 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:09:55,556 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:09:55,563 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 01:09:55,577 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 01:09:55,578 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:09:55,580 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:09:55,905 INFO L134 CoverageAnalysis]: Checked inductivity of 702 backedges. 0 proven. 702 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:09:55,925 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:09:55,925 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 54 [2018-10-01 01:09:55,926 INFO L459 AbstractCegarLoop]: Interpolant automaton has 56 states [2018-10-01 01:09:55,926 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2018-10-01 01:09:55,927 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:09:55,927 INFO L87 Difference]: Start difference. First operand 56 states and 56 transitions. Second operand 56 states. [2018-10-01 01:09:56,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:09:56,570 INFO L93 Difference]: Finished difference Result 59 states and 59 transitions. [2018-10-01 01:09:56,571 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2018-10-01 01:09:56,571 INFO L78 Accepts]: Start accepts. Automaton has 56 states. Word has length 55 [2018-10-01 01:09:56,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:09:56,571 INFO L225 Difference]: With dead ends: 59 [2018-10-01 01:09:56,571 INFO L226 Difference]: Without dead ends: 58 [2018-10-01 01:09:56,572 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time [2018-10-01 01:09:56,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2018-10-01 01:09:56,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2018-10-01 01:09:56,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2018-10-01 01:09:56,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 58 transitions. [2018-10-01 01:09:56,577 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 58 transitions. Word has length 55 [2018-10-01 01:09:56,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:09:56,577 INFO L480 AbstractCegarLoop]: Abstraction has 58 states and 58 transitions. [2018-10-01 01:09:56,577 INFO L481 AbstractCegarLoop]: Interpolant automaton has 56 states. [2018-10-01 01:09:56,578 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 58 transitions. [2018-10-01 01:09:56,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2018-10-01 01:09:56,578 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:09:56,578 INFO L375 BasicCegarLoop]: trace histogram [28, 27, 1, 1] [2018-10-01 01:09:56,578 INFO L423 AbstractCegarLoop]: === Iteration 28 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:09:56,578 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:09:56,579 INFO L82 PathProgramCache]: Analyzing trace with hash 1554937942, now seen corresponding path program 27 times [2018-10-01 01:09:56,579 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:09:56,579 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:09:56,579 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:09:56,579 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:09:56,579 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:09:56,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:09:57,383 INFO L134 CoverageAnalysis]: Checked inductivity of 756 backedges. 0 proven. 756 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:09:57,383 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:09:57,383 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:09:57,391 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 01:09:57,415 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 28 check-sat command(s) [2018-10-01 01:09:57,415 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:09:57,417 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:09:57,763 INFO L134 CoverageAnalysis]: Checked inductivity of 756 backedges. 0 proven. 756 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:09:57,783 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:09:57,783 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 56 [2018-10-01 01:09:57,784 INFO L459 AbstractCegarLoop]: Interpolant automaton has 58 states [2018-10-01 01:09:57,784 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2018-10-01 01:09:57,784 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:09:57,784 INFO L87 Difference]: Start difference. First operand 58 states and 58 transitions. Second operand 58 states. [2018-10-01 01:09:58,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:09:58,145 INFO L93 Difference]: Finished difference Result 61 states and 61 transitions. [2018-10-01 01:09:58,146 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2018-10-01 01:09:58,146 INFO L78 Accepts]: Start accepts. Automaton has 58 states. Word has length 57 [2018-10-01 01:09:58,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:09:58,147 INFO L225 Difference]: With dead ends: 61 [2018-10-01 01:09:58,147 INFO L226 Difference]: Without dead ends: 60 [2018-10-01 01:09:58,147 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s Time [2018-10-01 01:09:58,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2018-10-01 01:09:58,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2018-10-01 01:09:58,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2018-10-01 01:09:58,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 60 transitions. [2018-10-01 01:09:58,152 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 60 transitions. Word has length 57 [2018-10-01 01:09:58,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:09:58,152 INFO L480 AbstractCegarLoop]: Abstraction has 60 states and 60 transitions. [2018-10-01 01:09:58,152 INFO L481 AbstractCegarLoop]: Interpolant automaton has 58 states. [2018-10-01 01:09:58,152 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 60 transitions. [2018-10-01 01:09:58,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2018-10-01 01:09:58,153 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:09:58,153 INFO L375 BasicCegarLoop]: trace histogram [29, 28, 1, 1] [2018-10-01 01:09:58,153 INFO L423 AbstractCegarLoop]: === Iteration 29 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:09:58,153 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:09:58,153 INFO L82 PathProgramCache]: Analyzing trace with hash -353255656, now seen corresponding path program 28 times [2018-10-01 01:09:58,154 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:09:58,154 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:09:58,154 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:09:58,154 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:09:58,154 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:09:58,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:09:58,382 INFO L134 CoverageAnalysis]: Checked inductivity of 812 backedges. 0 proven. 812 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:09:58,383 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:09:58,383 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:09:58,390 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 01:09:58,408 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 01:09:58,409 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:09:58,410 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:09:59,449 INFO L134 CoverageAnalysis]: Checked inductivity of 812 backedges. 0 proven. 812 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:09:59,469 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:09:59,469 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 58 [2018-10-01 01:09:59,470 INFO L459 AbstractCegarLoop]: Interpolant automaton has 60 states [2018-10-01 01:09:59,470 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2018-10-01 01:09:59,470 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:09:59,470 INFO L87 Difference]: Start difference. First operand 60 states and 60 transitions. Second operand 60 states. [2018-10-01 01:10:00,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:10:00,121 INFO L93 Difference]: Finished difference Result 63 states and 63 transitions. [2018-10-01 01:10:00,121 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2018-10-01 01:10:00,121 INFO L78 Accepts]: Start accepts. Automaton has 60 states. Word has length 59 [2018-10-01 01:10:00,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:10:00,121 INFO L225 Difference]: With dead ends: 63 [2018-10-01 01:10:00,122 INFO L226 Difference]: Without dead ends: 62 [2018-10-01 01:10:00,122 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s Time [2018-10-01 01:10:00,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2018-10-01 01:10:00,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2018-10-01 01:10:00,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2018-10-01 01:10:00,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 62 transitions. [2018-10-01 01:10:00,125 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 62 transitions. Word has length 59 [2018-10-01 01:10:00,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:10:00,125 INFO L480 AbstractCegarLoop]: Abstraction has 62 states and 62 transitions. [2018-10-01 01:10:00,125 INFO L481 AbstractCegarLoop]: Interpolant automaton has 60 states. [2018-10-01 01:10:00,125 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 62 transitions. [2018-10-01 01:10:00,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2018-10-01 01:10:00,126 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:10:00,126 INFO L375 BasicCegarLoop]: trace histogram [30, 29, 1, 1] [2018-10-01 01:10:00,126 INFO L423 AbstractCegarLoop]: === Iteration 30 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:10:00,126 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:10:00,127 INFO L82 PathProgramCache]: Analyzing trace with hash -176267942, now seen corresponding path program 29 times [2018-10-01 01:10:00,127 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:10:00,127 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:10:00,127 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:10:00,128 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:10:00,128 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:10:00,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:10:00,376 INFO L134 CoverageAnalysis]: Checked inductivity of 870 backedges. 0 proven. 870 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:10:00,376 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:10:00,377 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:10:00,384 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 01:10:00,409 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 30 check-sat command(s) [2018-10-01 01:10:00,409 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:10:00,411 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:10:00,763 INFO L134 CoverageAnalysis]: Checked inductivity of 870 backedges. 0 proven. 870 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:10:00,783 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:10:00,783 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30] total 60 [2018-10-01 01:10:00,784 INFO L459 AbstractCegarLoop]: Interpolant automaton has 62 states [2018-10-01 01:10:00,784 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2018-10-01 01:10:00,784 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:10:00,784 INFO L87 Difference]: Start difference. First operand 62 states and 62 transitions. Second operand 62 states. [2018-10-01 01:10:01,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:10:01,470 INFO L93 Difference]: Finished difference Result 65 states and 65 transitions. [2018-10-01 01:10:01,470 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2018-10-01 01:10:01,470 INFO L78 Accepts]: Start accepts. Automaton has 62 states. Word has length 61 [2018-10-01 01:10:01,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:10:01,471 INFO L225 Difference]: With dead ends: 65 [2018-10-01 01:10:01,471 INFO L226 Difference]: Without dead ends: 64 [2018-10-01 01:10:01,471 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time [2018-10-01 01:10:01,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2018-10-01 01:10:01,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2018-10-01 01:10:01,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2018-10-01 01:10:01,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 64 transitions. [2018-10-01 01:10:01,476 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 64 transitions. Word has length 61 [2018-10-01 01:10:01,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:10:01,477 INFO L480 AbstractCegarLoop]: Abstraction has 64 states and 64 transitions. [2018-10-01 01:10:01,477 INFO L481 AbstractCegarLoop]: Interpolant automaton has 62 states. [2018-10-01 01:10:01,477 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 64 transitions. [2018-10-01 01:10:01,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2018-10-01 01:10:01,477 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:10:01,477 INFO L375 BasicCegarLoop]: trace histogram [31, 30, 1, 1] [2018-10-01 01:10:01,477 INFO L423 AbstractCegarLoop]: === Iteration 31 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:10:01,477 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:10:01,478 INFO L82 PathProgramCache]: Analyzing trace with hash -1889766628, now seen corresponding path program 30 times [2018-10-01 01:10:01,478 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:10:01,478 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:10:01,478 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:10:01,478 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:10:01,479 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:10:01,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:10:01,705 INFO L134 CoverageAnalysis]: Checked inductivity of 930 backedges. 0 proven. 930 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:10:01,706 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:10:01,706 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:10:01,714 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 01:10:01,745 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 31 check-sat command(s) [2018-10-01 01:10:01,745 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:10:01,747 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:10:02,115 INFO L134 CoverageAnalysis]: Checked inductivity of 930 backedges. 0 proven. 930 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:10:02,136 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:10:02,136 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 62 [2018-10-01 01:10:02,137 INFO L459 AbstractCegarLoop]: Interpolant automaton has 64 states [2018-10-01 01:10:02,137 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2018-10-01 01:10:02,137 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:10:02,137 INFO L87 Difference]: Start difference. First operand 64 states and 64 transitions. Second operand 64 states. [2018-10-01 01:10:02,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:10:02,559 INFO L93 Difference]: Finished difference Result 67 states and 67 transitions. [2018-10-01 01:10:02,559 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2018-10-01 01:10:02,559 INFO L78 Accepts]: Start accepts. Automaton has 64 states. Word has length 63 [2018-10-01 01:10:02,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:10:02,560 INFO L225 Difference]: With dead ends: 67 [2018-10-01 01:10:02,561 INFO L226 Difference]: Without dead ends: 66 [2018-10-01 01:10:02,561 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time [2018-10-01 01:10:02,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2018-10-01 01:10:02,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2018-10-01 01:10:02,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2018-10-01 01:10:02,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 66 transitions. [2018-10-01 01:10:02,565 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 66 transitions. Word has length 63 [2018-10-01 01:10:02,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:10:02,565 INFO L480 AbstractCegarLoop]: Abstraction has 66 states and 66 transitions. [2018-10-01 01:10:02,565 INFO L481 AbstractCegarLoop]: Interpolant automaton has 64 states. [2018-10-01 01:10:02,565 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 66 transitions. [2018-10-01 01:10:02,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2018-10-01 01:10:02,566 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:10:02,566 INFO L375 BasicCegarLoop]: trace histogram [32, 31, 1, 1] [2018-10-01 01:10:02,566 INFO L423 AbstractCegarLoop]: === Iteration 32 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:10:02,566 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:10:02,566 INFO L82 PathProgramCache]: Analyzing trace with hash 705437790, now seen corresponding path program 31 times [2018-10-01 01:10:02,566 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:10:02,566 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:10:02,567 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:10:02,567 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:10:02,567 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:10:02,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:10:03,145 INFO L134 CoverageAnalysis]: Checked inductivity of 992 backedges. 0 proven. 992 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:10:03,145 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:10:03,145 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:10:03,152 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:10:03,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:10:03,169 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:10:03,517 INFO L134 CoverageAnalysis]: Checked inductivity of 992 backedges. 0 proven. 992 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:10:03,536 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:10:03,537 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32] total 64 [2018-10-01 01:10:03,537 INFO L459 AbstractCegarLoop]: Interpolant automaton has 66 states [2018-10-01 01:10:03,538 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2018-10-01 01:10:03,538 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:10:03,538 INFO L87 Difference]: Start difference. First operand 66 states and 66 transitions. Second operand 66 states. [2018-10-01 01:10:03,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:10:03,980 INFO L93 Difference]: Finished difference Result 69 states and 69 transitions. [2018-10-01 01:10:03,980 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2018-10-01 01:10:03,981 INFO L78 Accepts]: Start accepts. Automaton has 66 states. Word has length 65 [2018-10-01 01:10:03,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:10:03,982 INFO L225 Difference]: With dead ends: 69 [2018-10-01 01:10:03,982 INFO L226 Difference]: Without dead ends: 68 [2018-10-01 01:10:03,982 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s Time [2018-10-01 01:10:03,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2018-10-01 01:10:03,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2018-10-01 01:10:03,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2018-10-01 01:10:03,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 68 transitions. [2018-10-01 01:10:03,985 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 68 transitions. Word has length 65 [2018-10-01 01:10:03,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:10:03,986 INFO L480 AbstractCegarLoop]: Abstraction has 68 states and 68 transitions. [2018-10-01 01:10:03,986 INFO L481 AbstractCegarLoop]: Interpolant automaton has 66 states. [2018-10-01 01:10:03,986 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 68 transitions. [2018-10-01 01:10:03,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2018-10-01 01:10:03,986 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:10:03,986 INFO L375 BasicCegarLoop]: trace histogram [33, 32, 1, 1] [2018-10-01 01:10:03,987 INFO L423 AbstractCegarLoop]: === Iteration 33 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:10:03,987 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:10:03,987 INFO L82 PathProgramCache]: Analyzing trace with hash -679115488, now seen corresponding path program 32 times [2018-10-01 01:10:03,987 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:10:03,987 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:10:03,988 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:10:03,988 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:10:03,988 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:10:03,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:10:04,317 INFO L134 CoverageAnalysis]: Checked inductivity of 1056 backedges. 0 proven. 1056 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:10:04,317 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:10:04,317 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:10:04,324 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 01:10:04,340 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 01:10:04,340 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:10:04,344 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:10:04,780 INFO L134 CoverageAnalysis]: Checked inductivity of 1056 backedges. 0 proven. 1056 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:10:04,800 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:10:04,800 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 66 [2018-10-01 01:10:04,801 INFO L459 AbstractCegarLoop]: Interpolant automaton has 68 states [2018-10-01 01:10:04,801 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2018-10-01 01:10:04,801 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:10:04,801 INFO L87 Difference]: Start difference. First operand 68 states and 68 transitions. Second operand 68 states. [2018-10-01 01:10:05,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:10:05,307 INFO L93 Difference]: Finished difference Result 71 states and 71 transitions. [2018-10-01 01:10:05,307 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2018-10-01 01:10:05,308 INFO L78 Accepts]: Start accepts. Automaton has 68 states. Word has length 67 [2018-10-01 01:10:05,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:10:05,308 INFO L225 Difference]: With dead ends: 71 [2018-10-01 01:10:05,308 INFO L226 Difference]: Without dead ends: 70 [2018-10-01 01:10:05,309 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s Time [2018-10-01 01:10:05,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2018-10-01 01:10:05,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2018-10-01 01:10:05,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2018-10-01 01:10:05,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 70 transitions. [2018-10-01 01:10:05,313 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 70 transitions. Word has length 67 [2018-10-01 01:10:05,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:10:05,313 INFO L480 AbstractCegarLoop]: Abstraction has 70 states and 70 transitions. [2018-10-01 01:10:05,313 INFO L481 AbstractCegarLoop]: Interpolant automaton has 68 states. [2018-10-01 01:10:05,313 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 70 transitions. [2018-10-01 01:10:05,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2018-10-01 01:10:05,314 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:10:05,314 INFO L375 BasicCegarLoop]: trace histogram [34, 33, 1, 1] [2018-10-01 01:10:05,314 INFO L423 AbstractCegarLoop]: === Iteration 34 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:10:05,314 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:10:05,315 INFO L82 PathProgramCache]: Analyzing trace with hash 205046114, now seen corresponding path program 33 times [2018-10-01 01:10:05,315 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:10:05,315 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:10:05,315 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:10:05,316 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:10:05,316 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:10:05,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:10:05,797 INFO L134 CoverageAnalysis]: Checked inductivity of 1122 backedges. 0 proven. 1122 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:10:05,797 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:10:05,797 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:10:05,805 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 01:10:05,836 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 34 check-sat command(s) [2018-10-01 01:10:05,837 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:10:05,838 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:10:06,226 INFO L134 CoverageAnalysis]: Checked inductivity of 1122 backedges. 0 proven. 1122 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:10:06,246 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:10:06,246 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 68 [2018-10-01 01:10:06,246 INFO L459 AbstractCegarLoop]: Interpolant automaton has 70 states [2018-10-01 01:10:06,247 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2018-10-01 01:10:06,247 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:10:06,247 INFO L87 Difference]: Start difference. First operand 70 states and 70 transitions. Second operand 70 states. [2018-10-01 01:10:06,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:10:06,964 INFO L93 Difference]: Finished difference Result 73 states and 73 transitions. [2018-10-01 01:10:06,964 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2018-10-01 01:10:06,965 INFO L78 Accepts]: Start accepts. Automaton has 70 states. Word has length 69 [2018-10-01 01:10:06,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:10:06,966 INFO L225 Difference]: With dead ends: 73 [2018-10-01 01:10:06,966 INFO L226 Difference]: Without dead ends: 72 [2018-10-01 01:10:06,966 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s Time [2018-10-01 01:10:06,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2018-10-01 01:10:06,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2018-10-01 01:10:06,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2018-10-01 01:10:06,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 72 transitions. [2018-10-01 01:10:06,970 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 72 transitions. Word has length 69 [2018-10-01 01:10:06,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:10:06,970 INFO L480 AbstractCegarLoop]: Abstraction has 72 states and 72 transitions. [2018-10-01 01:10:06,971 INFO L481 AbstractCegarLoop]: Interpolant automaton has 70 states. [2018-10-01 01:10:06,971 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 72 transitions. [2018-10-01 01:10:06,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2018-10-01 01:10:06,971 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:10:06,971 INFO L375 BasicCegarLoop]: trace histogram [35, 34, 1, 1] [2018-10-01 01:10:06,971 INFO L423 AbstractCegarLoop]: === Iteration 35 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:10:06,971 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:10:06,972 INFO L82 PathProgramCache]: Analyzing trace with hash -519178972, now seen corresponding path program 34 times [2018-10-01 01:10:06,972 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:10:06,972 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:10:06,972 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:10:06,972 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:10:06,972 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:10:06,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:10:07,223 INFO L134 CoverageAnalysis]: Checked inductivity of 1190 backedges. 0 proven. 1190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:10:07,223 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:10:07,223 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:10:07,232 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 01:10:07,253 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 01:10:07,253 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:10:07,255 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:10:07,650 INFO L134 CoverageAnalysis]: Checked inductivity of 1190 backedges. 0 proven. 1190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:10:07,671 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:10:07,671 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 70 [2018-10-01 01:10:07,671 INFO L459 AbstractCegarLoop]: Interpolant automaton has 72 states [2018-10-01 01:10:07,672 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2018-10-01 01:10:07,672 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:10:07,672 INFO L87 Difference]: Start difference. First operand 72 states and 72 transitions. Second operand 72 states. [2018-10-01 01:10:08,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:10:08,110 INFO L93 Difference]: Finished difference Result 75 states and 75 transitions. [2018-10-01 01:10:08,111 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2018-10-01 01:10:08,111 INFO L78 Accepts]: Start accepts. Automaton has 72 states. Word has length 71 [2018-10-01 01:10:08,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:10:08,112 INFO L225 Difference]: With dead ends: 75 [2018-10-01 01:10:08,112 INFO L226 Difference]: Without dead ends: 74 [2018-10-01 01:10:08,113 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time [2018-10-01 01:10:08,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2018-10-01 01:10:08,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2018-10-01 01:10:08,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2018-10-01 01:10:08,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 74 transitions. [2018-10-01 01:10:08,116 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 74 transitions. Word has length 71 [2018-10-01 01:10:08,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:10:08,117 INFO L480 AbstractCegarLoop]: Abstraction has 74 states and 74 transitions. [2018-10-01 01:10:08,117 INFO L481 AbstractCegarLoop]: Interpolant automaton has 72 states. [2018-10-01 01:10:08,117 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 74 transitions. [2018-10-01 01:10:08,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2018-10-01 01:10:08,117 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:10:08,117 INFO L375 BasicCegarLoop]: trace histogram [36, 35, 1, 1] [2018-10-01 01:10:08,118 INFO L423 AbstractCegarLoop]: === Iteration 36 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:10:08,118 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:10:08,118 INFO L82 PathProgramCache]: Analyzing trace with hash -714784666, now seen corresponding path program 35 times [2018-10-01 01:10:08,118 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:10:08,118 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:10:08,119 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:10:08,119 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:10:08,119 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:10:08,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:10:08,631 INFO L134 CoverageAnalysis]: Checked inductivity of 1260 backedges. 0 proven. 1260 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:10:08,631 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:10:08,631 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:10:08,638 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 01:10:08,673 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 36 check-sat command(s) [2018-10-01 01:10:08,673 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:10:08,675 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:10:09,122 INFO L134 CoverageAnalysis]: Checked inductivity of 1260 backedges. 0 proven. 1260 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:10:09,142 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:10:09,142 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36] total 72 [2018-10-01 01:10:09,142 INFO L459 AbstractCegarLoop]: Interpolant automaton has 74 states [2018-10-01 01:10:09,143 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2018-10-01 01:10:09,143 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:10:09,143 INFO L87 Difference]: Start difference. First operand 74 states and 74 transitions. Second operand 74 states. [2018-10-01 01:10:10,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:10:10,103 INFO L93 Difference]: Finished difference Result 77 states and 77 transitions. [2018-10-01 01:10:10,104 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2018-10-01 01:10:10,104 INFO L78 Accepts]: Start accepts. Automaton has 74 states. Word has length 73 [2018-10-01 01:10:10,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:10:10,105 INFO L225 Difference]: With dead ends: 77 [2018-10-01 01:10:10,105 INFO L226 Difference]: Without dead ends: 76 [2018-10-01 01:10:10,105 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s Time [2018-10-01 01:10:10,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2018-10-01 01:10:10,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76. [2018-10-01 01:10:10,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2018-10-01 01:10:10,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 76 transitions. [2018-10-01 01:10:10,109 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 76 transitions. Word has length 73 [2018-10-01 01:10:10,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:10:10,109 INFO L480 AbstractCegarLoop]: Abstraction has 76 states and 76 transitions. [2018-10-01 01:10:10,109 INFO L481 AbstractCegarLoop]: Interpolant automaton has 74 states. [2018-10-01 01:10:10,109 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 76 transitions. [2018-10-01 01:10:10,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2018-10-01 01:10:10,110 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:10:10,110 INFO L375 BasicCegarLoop]: trace histogram [37, 36, 1, 1] [2018-10-01 01:10:10,110 INFO L423 AbstractCegarLoop]: === Iteration 37 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:10:10,110 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:10:10,110 INFO L82 PathProgramCache]: Analyzing trace with hash 286704424, now seen corresponding path program 36 times [2018-10-01 01:10:10,110 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:10:10,111 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:10:10,111 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:10:10,111 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:10:10,111 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:10:10,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:10:10,420 INFO L134 CoverageAnalysis]: Checked inductivity of 1332 backedges. 0 proven. 1332 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:10:10,420 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:10:10,420 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:10:10,427 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 01:10:10,464 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 37 check-sat command(s) [2018-10-01 01:10:10,464 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:10:10,467 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:10:10,910 INFO L134 CoverageAnalysis]: Checked inductivity of 1332 backedges. 0 proven. 1332 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:10:10,930 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:10:10,930 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37] total 74 [2018-10-01 01:10:10,931 INFO L459 AbstractCegarLoop]: Interpolant automaton has 76 states [2018-10-01 01:10:10,931 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2018-10-01 01:10:10,931 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:10:10,931 INFO L87 Difference]: Start difference. First operand 76 states and 76 transitions. Second operand 76 states. [2018-10-01 01:10:11,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:10:11,384 INFO L93 Difference]: Finished difference Result 79 states and 79 transitions. [2018-10-01 01:10:11,384 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2018-10-01 01:10:11,384 INFO L78 Accepts]: Start accepts. Automaton has 76 states. Word has length 75 [2018-10-01 01:10:11,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:10:11,385 INFO L225 Difference]: With dead ends: 79 [2018-10-01 01:10:11,385 INFO L226 Difference]: Without dead ends: 78 [2018-10-01 01:10:11,385 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s Time [2018-10-01 01:10:11,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2018-10-01 01:10:11,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2018-10-01 01:10:11,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2018-10-01 01:10:11,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 78 transitions. [2018-10-01 01:10:11,389 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 78 transitions. Word has length 75 [2018-10-01 01:10:11,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:10:11,389 INFO L480 AbstractCegarLoop]: Abstraction has 78 states and 78 transitions. [2018-10-01 01:10:11,390 INFO L481 AbstractCegarLoop]: Interpolant automaton has 76 states. [2018-10-01 01:10:11,390 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 78 transitions. [2018-10-01 01:10:11,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2018-10-01 01:10:11,390 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:10:11,390 INFO L375 BasicCegarLoop]: trace histogram [38, 37, 1, 1] [2018-10-01 01:10:11,391 INFO L423 AbstractCegarLoop]: === Iteration 38 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:10:11,391 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:10:11,391 INFO L82 PathProgramCache]: Analyzing trace with hash 645045610, now seen corresponding path program 37 times [2018-10-01 01:10:11,391 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:10:11,391 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:10:11,392 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:10:11,392 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:10:11,392 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:10:11,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:10:11,896 INFO L134 CoverageAnalysis]: Checked inductivity of 1406 backedges. 0 proven. 1406 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:10:11,897 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:10:11,897 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:10:11,916 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:10:11,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:10:11,940 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:10:12,371 INFO L134 CoverageAnalysis]: Checked inductivity of 1406 backedges. 0 proven. 1406 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:10:12,391 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:10:12,391 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 38] total 76 [2018-10-01 01:10:12,392 INFO L459 AbstractCegarLoop]: Interpolant automaton has 78 states [2018-10-01 01:10:12,392 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2018-10-01 01:10:12,392 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:10:12,393 INFO L87 Difference]: Start difference. First operand 78 states and 78 transitions. Second operand 78 states. [2018-10-01 01:10:13,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:10:13,045 INFO L93 Difference]: Finished difference Result 81 states and 81 transitions. [2018-10-01 01:10:13,046 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2018-10-01 01:10:13,046 INFO L78 Accepts]: Start accepts. Automaton has 78 states. Word has length 77 [2018-10-01 01:10:13,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:10:13,047 INFO L225 Difference]: With dead ends: 81 [2018-10-01 01:10:13,047 INFO L226 Difference]: Without dead ends: 80 [2018-10-01 01:10:13,047 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s Time [2018-10-01 01:10:13,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2018-10-01 01:10:13,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2018-10-01 01:10:13,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2018-10-01 01:10:13,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 80 transitions. [2018-10-01 01:10:13,051 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 80 transitions. Word has length 77 [2018-10-01 01:10:13,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:10:13,052 INFO L480 AbstractCegarLoop]: Abstraction has 80 states and 80 transitions. [2018-10-01 01:10:13,052 INFO L481 AbstractCegarLoop]: Interpolant automaton has 78 states. [2018-10-01 01:10:13,052 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 80 transitions. [2018-10-01 01:10:13,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2018-10-01 01:10:13,052 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:10:13,052 INFO L375 BasicCegarLoop]: trace histogram [39, 38, 1, 1] [2018-10-01 01:10:13,052 INFO L423 AbstractCegarLoop]: === Iteration 39 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:10:13,052 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:10:13,053 INFO L82 PathProgramCache]: Analyzing trace with hash 1413541676, now seen corresponding path program 38 times [2018-10-01 01:10:13,053 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:10:13,053 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:10:13,053 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:10:13,053 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:10:13,053 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:10:13,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:10:13,831 INFO L134 CoverageAnalysis]: Checked inductivity of 1482 backedges. 0 proven. 1482 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:10:13,831 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:10:13,831 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:10:13,840 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 01:10:13,860 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 01:10:13,860 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:10:13,862 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:10:14,361 INFO L134 CoverageAnalysis]: Checked inductivity of 1482 backedges. 0 proven. 1482 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:10:14,381 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:10:14,381 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 39] total 78 [2018-10-01 01:10:14,382 INFO L459 AbstractCegarLoop]: Interpolant automaton has 80 states [2018-10-01 01:10:14,382 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2018-10-01 01:10:14,382 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:10:14,383 INFO L87 Difference]: Start difference. First operand 80 states and 80 transitions. Second operand 80 states. [2018-10-01 01:10:14,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:10:14,989 INFO L93 Difference]: Finished difference Result 83 states and 83 transitions. [2018-10-01 01:10:14,989 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2018-10-01 01:10:14,989 INFO L78 Accepts]: Start accepts. Automaton has 80 states. Word has length 79 [2018-10-01 01:10:14,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:10:14,990 INFO L225 Difference]: With dead ends: 83 [2018-10-01 01:10:14,990 INFO L226 Difference]: Without dead ends: 82 [2018-10-01 01:10:14,991 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s Time [2018-10-01 01:10:14,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2018-10-01 01:10:14,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 82. [2018-10-01 01:10:14,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2018-10-01 01:10:14,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 82 transitions. [2018-10-01 01:10:14,995 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 82 transitions. Word has length 79 [2018-10-01 01:10:14,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:10:14,995 INFO L480 AbstractCegarLoop]: Abstraction has 82 states and 82 transitions. [2018-10-01 01:10:14,995 INFO L481 AbstractCegarLoop]: Interpolant automaton has 80 states. [2018-10-01 01:10:14,995 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 82 transitions. [2018-10-01 01:10:14,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2018-10-01 01:10:14,996 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:10:14,996 INFO L375 BasicCegarLoop]: trace histogram [40, 39, 1, 1] [2018-10-01 01:10:14,996 INFO L423 AbstractCegarLoop]: === Iteration 40 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:10:14,996 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:10:14,997 INFO L82 PathProgramCache]: Analyzing trace with hash 1203886190, now seen corresponding path program 39 times [2018-10-01 01:10:14,997 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:10:14,997 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:10:14,997 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:10:14,997 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:10:14,998 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:10:15,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:10:15,592 INFO L134 CoverageAnalysis]: Checked inductivity of 1560 backedges. 0 proven. 1560 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:10:15,592 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:10:15,592 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:10:15,599 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 01:10:15,637 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 40 check-sat command(s) [2018-10-01 01:10:15,638 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:10:15,639 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:10:16,291 INFO L134 CoverageAnalysis]: Checked inductivity of 1560 backedges. 0 proven. 1560 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:10:16,311 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:10:16,311 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 40] total 80 [2018-10-01 01:10:16,311 INFO L459 AbstractCegarLoop]: Interpolant automaton has 82 states [2018-10-01 01:10:16,312 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 82 interpolants. [2018-10-01 01:10:16,312 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:10:16,312 INFO L87 Difference]: Start difference. First operand 82 states and 82 transitions. Second operand 82 states. [2018-10-01 01:10:17,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:10:17,080 INFO L93 Difference]: Finished difference Result 85 states and 85 transitions. [2018-10-01 01:10:17,080 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2018-10-01 01:10:17,080 INFO L78 Accepts]: Start accepts. Automaton has 82 states. Word has length 81 [2018-10-01 01:10:17,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:10:17,081 INFO L225 Difference]: With dead ends: 85 [2018-10-01 01:10:17,081 INFO L226 Difference]: Without dead ends: 84 [2018-10-01 01:10:17,082 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s Time [2018-10-01 01:10:17,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2018-10-01 01:10:17,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 84. [2018-10-01 01:10:17,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2018-10-01 01:10:17,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 84 transitions. [2018-10-01 01:10:17,086 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 84 transitions. Word has length 81 [2018-10-01 01:10:17,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:10:17,086 INFO L480 AbstractCegarLoop]: Abstraction has 84 states and 84 transitions. [2018-10-01 01:10:17,086 INFO L481 AbstractCegarLoop]: Interpolant automaton has 82 states. [2018-10-01 01:10:17,087 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 84 transitions. [2018-10-01 01:10:17,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2018-10-01 01:10:17,087 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:10:17,087 INFO L375 BasicCegarLoop]: trace histogram [41, 40, 1, 1] [2018-10-01 01:10:17,087 INFO L423 AbstractCegarLoop]: === Iteration 41 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:10:17,088 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:10:17,088 INFO L82 PathProgramCache]: Analyzing trace with hash 1588427056, now seen corresponding path program 40 times [2018-10-01 01:10:17,088 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:10:17,088 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:10:17,089 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:10:17,089 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:10:17,089 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:10:17,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:10:17,473 INFO L134 CoverageAnalysis]: Checked inductivity of 1640 backedges. 0 proven. 1640 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:10:17,474 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:10:17,474 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:10:17,481 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 01:10:17,504 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 01:10:17,504 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:10:17,506 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:10:18,004 INFO L134 CoverageAnalysis]: Checked inductivity of 1640 backedges. 0 proven. 1640 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:10:18,024 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:10:18,024 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 41] total 82 [2018-10-01 01:10:18,024 INFO L459 AbstractCegarLoop]: Interpolant automaton has 84 states [2018-10-01 01:10:18,025 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2018-10-01 01:10:18,025 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:10:18,025 INFO L87 Difference]: Start difference. First operand 84 states and 84 transitions. Second operand 84 states. [2018-10-01 01:10:18,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:10:18,759 INFO L93 Difference]: Finished difference Result 87 states and 87 transitions. [2018-10-01 01:10:18,759 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2018-10-01 01:10:18,759 INFO L78 Accepts]: Start accepts. Automaton has 84 states. Word has length 83 [2018-10-01 01:10:18,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:10:18,760 INFO L225 Difference]: With dead ends: 87 [2018-10-01 01:10:18,760 INFO L226 Difference]: Without dead ends: 86 [2018-10-01 01:10:18,761 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s Time [2018-10-01 01:10:18,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2018-10-01 01:10:18,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 86. [2018-10-01 01:10:18,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2018-10-01 01:10:18,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 86 transitions. [2018-10-01 01:10:18,765 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 86 transitions. Word has length 83 [2018-10-01 01:10:18,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:10:18,765 INFO L480 AbstractCegarLoop]: Abstraction has 86 states and 86 transitions. [2018-10-01 01:10:18,765 INFO L481 AbstractCegarLoop]: Interpolant automaton has 84 states. [2018-10-01 01:10:18,765 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 86 transitions. [2018-10-01 01:10:18,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2018-10-01 01:10:18,766 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:10:18,766 INFO L375 BasicCegarLoop]: trace histogram [42, 41, 1, 1] [2018-10-01 01:10:18,766 INFO L423 AbstractCegarLoop]: === Iteration 42 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:10:18,766 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:10:18,767 INFO L82 PathProgramCache]: Analyzing trace with hash 1765011826, now seen corresponding path program 41 times [2018-10-01 01:10:18,767 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:10:18,767 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:10:18,767 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:10:18,768 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:10:18,768 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:10:18,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:10:19,524 INFO L134 CoverageAnalysis]: Checked inductivity of 1722 backedges. 0 proven. 1722 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:10:19,524 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:10:19,524 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 42 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 42 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:10:19,531 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 01:10:19,574 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 42 check-sat command(s) [2018-10-01 01:10:19,575 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:10:19,577 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:10:20,143 INFO L134 CoverageAnalysis]: Checked inductivity of 1722 backedges. 0 proven. 1722 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:10:20,163 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:10:20,163 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 42] total 84 [2018-10-01 01:10:20,164 INFO L459 AbstractCegarLoop]: Interpolant automaton has 86 states [2018-10-01 01:10:20,164 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 86 interpolants. [2018-10-01 01:10:20,165 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:10:20,165 INFO L87 Difference]: Start difference. First operand 86 states and 86 transitions. Second operand 86 states. [2018-10-01 01:10:20,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:10:20,691 INFO L93 Difference]: Finished difference Result 89 states and 89 transitions. [2018-10-01 01:10:20,691 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2018-10-01 01:10:20,691 INFO L78 Accepts]: Start accepts. Automaton has 86 states. Word has length 85 [2018-10-01 01:10:20,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:10:20,693 INFO L225 Difference]: With dead ends: 89 [2018-10-01 01:10:20,693 INFO L226 Difference]: Without dead ends: 88 [2018-10-01 01:10:20,693 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s Time [2018-10-01 01:10:20,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2018-10-01 01:10:20,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 88. [2018-10-01 01:10:20,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2018-10-01 01:10:20,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 88 transitions. [2018-10-01 01:10:20,699 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 88 transitions. Word has length 85 [2018-10-01 01:10:20,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:10:20,699 INFO L480 AbstractCegarLoop]: Abstraction has 88 states and 88 transitions. [2018-10-01 01:10:20,699 INFO L481 AbstractCegarLoop]: Interpolant automaton has 86 states. [2018-10-01 01:10:20,699 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 88 transitions. [2018-10-01 01:10:20,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2018-10-01 01:10:20,700 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:10:20,700 INFO L375 BasicCegarLoop]: trace histogram [43, 42, 1, 1] [2018-10-01 01:10:20,700 INFO L423 AbstractCegarLoop]: === Iteration 43 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:10:20,700 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:10:20,701 INFO L82 PathProgramCache]: Analyzing trace with hash -335716044, now seen corresponding path program 42 times [2018-10-01 01:10:20,701 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:10:20,701 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:10:20,701 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:10:20,701 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:10:20,702 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:10:20,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:10:21,016 INFO L134 CoverageAnalysis]: Checked inductivity of 1806 backedges. 0 proven. 1806 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:10:21,017 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:10:21,017 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 43 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 43 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:10:21,025 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 01:10:21,066 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 43 check-sat command(s) [2018-10-01 01:10:21,067 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:10:21,070 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:10:21,803 INFO L134 CoverageAnalysis]: Checked inductivity of 1806 backedges. 0 proven. 1806 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:10:21,823 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:10:21,824 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 43] total 86 [2018-10-01 01:10:21,824 INFO L459 AbstractCegarLoop]: Interpolant automaton has 88 states [2018-10-01 01:10:21,825 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 88 interpolants. [2018-10-01 01:10:21,825 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:10:21,825 INFO L87 Difference]: Start difference. First operand 88 states and 88 transitions. Second operand 88 states. [2018-10-01 01:10:22,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:10:22,508 INFO L93 Difference]: Finished difference Result 91 states and 91 transitions. [2018-10-01 01:10:22,509 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2018-10-01 01:10:22,509 INFO L78 Accepts]: Start accepts. Automaton has 88 states. Word has length 87 [2018-10-01 01:10:22,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:10:22,510 INFO L225 Difference]: With dead ends: 91 [2018-10-01 01:10:22,510 INFO L226 Difference]: Without dead ends: 90 [2018-10-01 01:10:22,510 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s Time [2018-10-01 01:10:22,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2018-10-01 01:10:22,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 90. [2018-10-01 01:10:22,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2018-10-01 01:10:22,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 90 transitions. [2018-10-01 01:10:22,515 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 90 transitions. Word has length 87 [2018-10-01 01:10:22,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:10:22,515 INFO L480 AbstractCegarLoop]: Abstraction has 90 states and 90 transitions. [2018-10-01 01:10:22,515 INFO L481 AbstractCegarLoop]: Interpolant automaton has 88 states. [2018-10-01 01:10:22,515 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 90 transitions. [2018-10-01 01:10:22,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2018-10-01 01:10:22,515 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:10:22,515 INFO L375 BasicCegarLoop]: trace histogram [44, 43, 1, 1] [2018-10-01 01:10:22,516 INFO L423 AbstractCegarLoop]: === Iteration 44 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:10:22,516 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:10:22,516 INFO L82 PathProgramCache]: Analyzing trace with hash -500569994, now seen corresponding path program 43 times [2018-10-01 01:10:22,516 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:10:22,516 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:10:22,517 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:10:22,517 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:10:22,517 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:10:22,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:10:22,852 INFO L134 CoverageAnalysis]: Checked inductivity of 1892 backedges. 0 proven. 1892 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:10:22,853 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:10:22,853 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 44 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 44 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:10:22,860 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:10:22,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:10:22,886 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:10:23,425 INFO L134 CoverageAnalysis]: Checked inductivity of 1892 backedges. 0 proven. 1892 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:10:23,445 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:10:23,445 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [44, 44] total 88 [2018-10-01 01:10:23,446 INFO L459 AbstractCegarLoop]: Interpolant automaton has 90 states [2018-10-01 01:10:23,447 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 90 interpolants. [2018-10-01 01:10:23,447 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:10:23,447 INFO L87 Difference]: Start difference. First operand 90 states and 90 transitions. Second operand 90 states. [2018-10-01 01:10:24,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:10:24,050 INFO L93 Difference]: Finished difference Result 93 states and 93 transitions. [2018-10-01 01:10:24,051 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2018-10-01 01:10:24,051 INFO L78 Accepts]: Start accepts. Automaton has 90 states. Word has length 89 [2018-10-01 01:10:24,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:10:24,052 INFO L225 Difference]: With dead ends: 93 [2018-10-01 01:10:24,052 INFO L226 Difference]: Without dead ends: 92 [2018-10-01 01:10:24,052 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s Time [2018-10-01 01:10:24,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2018-10-01 01:10:24,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 92. [2018-10-01 01:10:24,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2018-10-01 01:10:24,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 92 transitions. [2018-10-01 01:10:24,055 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 92 transitions. Word has length 89 [2018-10-01 01:10:24,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:10:24,055 INFO L480 AbstractCegarLoop]: Abstraction has 92 states and 92 transitions. [2018-10-01 01:10:24,055 INFO L481 AbstractCegarLoop]: Interpolant automaton has 90 states. [2018-10-01 01:10:24,055 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 92 transitions. [2018-10-01 01:10:24,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2018-10-01 01:10:24,056 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:10:24,056 INFO L375 BasicCegarLoop]: trace histogram [45, 44, 1, 1] [2018-10-01 01:10:24,056 INFO L423 AbstractCegarLoop]: === Iteration 45 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:10:24,057 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:10:24,057 INFO L82 PathProgramCache]: Analyzing trace with hash -11425992, now seen corresponding path program 44 times [2018-10-01 01:10:24,057 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:10:24,057 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:10:24,058 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:10:24,058 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:10:24,058 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:10:24,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:10:24,457 INFO L134 CoverageAnalysis]: Checked inductivity of 1980 backedges. 0 proven. 1980 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:10:24,457 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:10:24,458 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 45 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 45 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:10:24,465 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 01:10:24,490 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 01:10:24,490 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:10:24,492 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:10:25,130 INFO L134 CoverageAnalysis]: Checked inductivity of 1980 backedges. 0 proven. 1980 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:10:25,150 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:10:25,150 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 45] total 90 [2018-10-01 01:10:25,151 INFO L459 AbstractCegarLoop]: Interpolant automaton has 92 states [2018-10-01 01:10:25,151 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 92 interpolants. [2018-10-01 01:10:25,152 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:10:25,152 INFO L87 Difference]: Start difference. First operand 92 states and 92 transitions. Second operand 92 states. [2018-10-01 01:10:25,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:10:25,821 INFO L93 Difference]: Finished difference Result 95 states and 95 transitions. [2018-10-01 01:10:25,821 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2018-10-01 01:10:25,822 INFO L78 Accepts]: Start accepts. Automaton has 92 states. Word has length 91 [2018-10-01 01:10:25,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:10:25,823 INFO L225 Difference]: With dead ends: 95 [2018-10-01 01:10:25,823 INFO L226 Difference]: Without dead ends: 94 [2018-10-01 01:10:25,823 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s Time [2018-10-01 01:10:25,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2018-10-01 01:10:25,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 94. [2018-10-01 01:10:25,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2018-10-01 01:10:25,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 94 transitions. [2018-10-01 01:10:25,827 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 94 transitions. Word has length 91 [2018-10-01 01:10:25,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:10:25,828 INFO L480 AbstractCegarLoop]: Abstraction has 94 states and 94 transitions. [2018-10-01 01:10:25,828 INFO L481 AbstractCegarLoop]: Interpolant automaton has 92 states. [2018-10-01 01:10:25,828 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 94 transitions. [2018-10-01 01:10:25,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2018-10-01 01:10:25,828 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:10:25,829 INFO L375 BasicCegarLoop]: trace histogram [46, 45, 1, 1] [2018-10-01 01:10:25,829 INFO L423 AbstractCegarLoop]: === Iteration 46 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:10:25,829 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:10:25,829 INFO L82 PathProgramCache]: Analyzing trace with hash 1904524666, now seen corresponding path program 45 times [2018-10-01 01:10:25,829 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:10:25,829 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:10:25,830 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:10:25,830 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:10:25,830 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:10:25,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:10:26,382 INFO L134 CoverageAnalysis]: Checked inductivity of 2070 backedges. 0 proven. 2070 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:10:26,382 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:10:26,382 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 46 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 46 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:10:26,390 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 01:10:26,503 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 46 check-sat command(s) [2018-10-01 01:10:26,503 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:10:26,505 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:10:27,339 INFO L134 CoverageAnalysis]: Checked inductivity of 2070 backedges. 0 proven. 2070 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:10:27,359 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:10:27,359 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [46, 46] total 92 [2018-10-01 01:10:27,360 INFO L459 AbstractCegarLoop]: Interpolant automaton has 94 states [2018-10-01 01:10:27,360 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 94 interpolants. [2018-10-01 01:10:27,360 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:10:27,361 INFO L87 Difference]: Start difference. First operand 94 states and 94 transitions. Second operand 94 states. [2018-10-01 01:10:27,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:10:27,972 INFO L93 Difference]: Finished difference Result 97 states and 97 transitions. [2018-10-01 01:10:27,972 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2018-10-01 01:10:27,972 INFO L78 Accepts]: Start accepts. Automaton has 94 states. Word has length 93 [2018-10-01 01:10:27,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:10:27,973 INFO L225 Difference]: With dead ends: 97 [2018-10-01 01:10:27,973 INFO L226 Difference]: Without dead ends: 96 [2018-10-01 01:10:27,973 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s Time [2018-10-01 01:10:27,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2018-10-01 01:10:27,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 96. [2018-10-01 01:10:27,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2018-10-01 01:10:27,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 96 transitions. [2018-10-01 01:10:27,977 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 96 transitions. Word has length 93 [2018-10-01 01:10:27,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:10:27,977 INFO L480 AbstractCegarLoop]: Abstraction has 96 states and 96 transitions. [2018-10-01 01:10:27,977 INFO L481 AbstractCegarLoop]: Interpolant automaton has 94 states. [2018-10-01 01:10:27,977 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 96 transitions. [2018-10-01 01:10:27,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2018-10-01 01:10:27,978 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:10:27,978 INFO L375 BasicCegarLoop]: trace histogram [47, 46, 1, 1] [2018-10-01 01:10:27,978 INFO L423 AbstractCegarLoop]: === Iteration 47 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:10:27,979 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:10:27,979 INFO L82 PathProgramCache]: Analyzing trace with hash 592137020, now seen corresponding path program 46 times [2018-10-01 01:10:27,979 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:10:27,979 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:10:27,979 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:10:27,980 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:10:27,980 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:10:27,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:10:28,791 INFO L134 CoverageAnalysis]: Checked inductivity of 2162 backedges. 0 proven. 2162 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:10:28,791 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:10:28,791 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 47 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 47 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:10:28,798 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 01:10:28,824 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 01:10:28,824 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:10:28,827 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:10:29,517 INFO L134 CoverageAnalysis]: Checked inductivity of 2162 backedges. 0 proven. 2162 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:10:29,538 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:10:29,538 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 47] total 94 [2018-10-01 01:10:29,539 INFO L459 AbstractCegarLoop]: Interpolant automaton has 96 states [2018-10-01 01:10:29,540 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2018-10-01 01:10:29,540 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:10:29,540 INFO L87 Difference]: Start difference. First operand 96 states and 96 transitions. Second operand 96 states. [2018-10-01 01:10:30,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:10:30,130 INFO L93 Difference]: Finished difference Result 99 states and 99 transitions. [2018-10-01 01:10:30,131 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2018-10-01 01:10:30,131 INFO L78 Accepts]: Start accepts. Automaton has 96 states. Word has length 95 [2018-10-01 01:10:30,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:10:30,132 INFO L225 Difference]: With dead ends: 99 [2018-10-01 01:10:30,132 INFO L226 Difference]: Without dead ends: 98 [2018-10-01 01:10:30,132 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s Time [2018-10-01 01:10:30,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2018-10-01 01:10:30,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 98. [2018-10-01 01:10:30,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2018-10-01 01:10:30,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 98 transitions. [2018-10-01 01:10:30,136 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 98 transitions. Word has length 95 [2018-10-01 01:10:30,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:10:30,136 INFO L480 AbstractCegarLoop]: Abstraction has 98 states and 98 transitions. [2018-10-01 01:10:30,136 INFO L481 AbstractCegarLoop]: Interpolant automaton has 96 states. [2018-10-01 01:10:30,136 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 98 transitions. [2018-10-01 01:10:30,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2018-10-01 01:10:30,137 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:10:30,137 INFO L375 BasicCegarLoop]: trace histogram [48, 47, 1, 1] [2018-10-01 01:10:30,137 INFO L423 AbstractCegarLoop]: === Iteration 48 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:10:30,137 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:10:30,137 INFO L82 PathProgramCache]: Analyzing trace with hash 2107994238, now seen corresponding path program 47 times [2018-10-01 01:10:30,137 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:10:30,138 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:10:30,138 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:10:30,138 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:10:30,138 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:10:30,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:10:30,618 INFO L134 CoverageAnalysis]: Checked inductivity of 2256 backedges. 0 proven. 2256 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:10:30,618 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:10:30,619 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 48 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 48 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:10:30,625 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 01:10:30,672 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 48 check-sat command(s) [2018-10-01 01:10:30,672 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:10:30,675 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:10:31,433 INFO L134 CoverageAnalysis]: Checked inductivity of 2256 backedges. 0 proven. 2256 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:10:31,453 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:10:31,453 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 48] total 96 [2018-10-01 01:10:31,453 INFO L459 AbstractCegarLoop]: Interpolant automaton has 98 states [2018-10-01 01:10:31,454 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 98 interpolants. [2018-10-01 01:10:31,454 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:10:31,455 INFO L87 Difference]: Start difference. First operand 98 states and 98 transitions. Second operand 98 states. [2018-10-01 01:10:32,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:10:32,319 INFO L93 Difference]: Finished difference Result 101 states and 101 transitions. [2018-10-01 01:10:32,320 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2018-10-01 01:10:32,320 INFO L78 Accepts]: Start accepts. Automaton has 98 states. Word has length 97 [2018-10-01 01:10:32,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:10:32,321 INFO L225 Difference]: With dead ends: 101 [2018-10-01 01:10:32,321 INFO L226 Difference]: Without dead ends: 100 [2018-10-01 01:10:32,321 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s Time [2018-10-01 01:10:32,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2018-10-01 01:10:32,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 100. [2018-10-01 01:10:32,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2018-10-01 01:10:32,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 100 transitions. [2018-10-01 01:10:32,325 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 100 transitions. Word has length 97 [2018-10-01 01:10:32,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:10:32,325 INFO L480 AbstractCegarLoop]: Abstraction has 100 states and 100 transitions. [2018-10-01 01:10:32,325 INFO L481 AbstractCegarLoop]: Interpolant automaton has 98 states. [2018-10-01 01:10:32,326 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 100 transitions. [2018-10-01 01:10:32,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2018-10-01 01:10:32,326 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:10:32,326 INFO L375 BasicCegarLoop]: trace histogram [49, 48, 1, 1] [2018-10-01 01:10:32,327 INFO L423 AbstractCegarLoop]: === Iteration 49 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:10:32,327 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:10:32,327 INFO L82 PathProgramCache]: Analyzing trace with hash -1442099904, now seen corresponding path program 48 times [2018-10-01 01:10:32,327 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:10:32,327 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:10:32,328 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:10:32,328 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:10:32,328 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:10:32,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:10:32,720 INFO L134 CoverageAnalysis]: Checked inductivity of 2352 backedges. 0 proven. 2352 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:10:32,721 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:10:32,721 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 49 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 49 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:10:32,727 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 01:10:32,771 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 49 check-sat command(s) [2018-10-01 01:10:32,772 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:10:32,774 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:10:33,446 INFO L134 CoverageAnalysis]: Checked inductivity of 2352 backedges. 0 proven. 2352 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:10:33,466 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:10:33,466 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 49] total 98 [2018-10-01 01:10:33,466 INFO L459 AbstractCegarLoop]: Interpolant automaton has 100 states [2018-10-01 01:10:33,467 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 100 interpolants. [2018-10-01 01:10:33,467 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:10:33,467 INFO L87 Difference]: Start difference. First operand 100 states and 100 transitions. Second operand 100 states. [2018-10-01 01:10:34,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:10:34,060 INFO L93 Difference]: Finished difference Result 103 states and 103 transitions. [2018-10-01 01:10:34,060 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2018-10-01 01:10:34,061 INFO L78 Accepts]: Start accepts. Automaton has 100 states. Word has length 99 [2018-10-01 01:10:34,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:10:34,061 INFO L225 Difference]: With dead ends: 103 [2018-10-01 01:10:34,061 INFO L226 Difference]: Without dead ends: 102 [2018-10-01 01:10:34,062 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s Time [2018-10-01 01:10:34,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2018-10-01 01:10:34,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 102. [2018-10-01 01:10:34,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102 states. [2018-10-01 01:10:34,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 102 transitions. [2018-10-01 01:10:34,065 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 102 transitions. Word has length 99 [2018-10-01 01:10:34,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:10:34,066 INFO L480 AbstractCegarLoop]: Abstraction has 102 states and 102 transitions. [2018-10-01 01:10:34,066 INFO L481 AbstractCegarLoop]: Interpolant automaton has 100 states. [2018-10-01 01:10:34,066 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 102 transitions. [2018-10-01 01:10:34,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2018-10-01 01:10:34,066 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:10:34,066 INFO L375 BasicCegarLoop]: trace histogram [50, 49, 1, 1] [2018-10-01 01:10:34,067 INFO L423 AbstractCegarLoop]: === Iteration 50 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:10:34,067 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:10:34,067 INFO L82 PathProgramCache]: Analyzing trace with hash 1416429954, now seen corresponding path program 49 times [2018-10-01 01:10:34,067 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:10:34,067 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:10:34,068 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:10:34,068 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:10:34,068 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:10:34,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:10:34,942 INFO L134 CoverageAnalysis]: Checked inductivity of 2450 backedges. 0 proven. 2450 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:10:34,942 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:10:34,942 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 50 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 50 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:10:34,949 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:10:34,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:10:34,978 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:10:36,408 INFO L134 CoverageAnalysis]: Checked inductivity of 2450 backedges. 0 proven. 2450 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:10:36,428 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:10:36,428 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [50, 50] total 100 [2018-10-01 01:10:36,429 INFO L459 AbstractCegarLoop]: Interpolant automaton has 102 states [2018-10-01 01:10:36,429 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 102 interpolants. [2018-10-01 01:10:36,429 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:10:36,430 INFO L87 Difference]: Start difference. First operand 102 states and 102 transitions. Second operand 102 states. [2018-10-01 01:10:37,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:10:37,030 INFO L93 Difference]: Finished difference Result 105 states and 105 transitions. [2018-10-01 01:10:37,030 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2018-10-01 01:10:37,030 INFO L78 Accepts]: Start accepts. Automaton has 102 states. Word has length 101 [2018-10-01 01:10:37,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:10:37,032 INFO L225 Difference]: With dead ends: 105 [2018-10-01 01:10:37,032 INFO L226 Difference]: Without dead ends: 104 [2018-10-01 01:10:37,032 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.2s Time [2018-10-01 01:10:37,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2018-10-01 01:10:37,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 104. [2018-10-01 01:10:37,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2018-10-01 01:10:37,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 104 transitions. [2018-10-01 01:10:37,036 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 104 transitions. Word has length 101 [2018-10-01 01:10:37,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:10:37,037 INFO L480 AbstractCegarLoop]: Abstraction has 104 states and 104 transitions. [2018-10-01 01:10:37,037 INFO L481 AbstractCegarLoop]: Interpolant automaton has 102 states. [2018-10-01 01:10:37,037 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 104 transitions. [2018-10-01 01:10:37,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2018-10-01 01:10:37,037 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:10:37,037 INFO L375 BasicCegarLoop]: trace histogram [51, 50, 1, 1] [2018-10-01 01:10:37,038 INFO L423 AbstractCegarLoop]: === Iteration 51 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:10:37,038 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:10:37,038 INFO L82 PathProgramCache]: Analyzing trace with hash -315445948, now seen corresponding path program 50 times [2018-10-01 01:10:37,038 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:10:37,038 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:10:37,039 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:10:37,039 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:10:37,039 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:10:37,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:10:37,451 INFO L134 CoverageAnalysis]: Checked inductivity of 2550 backedges. 0 proven. 2550 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:10:37,451 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:10:37,451 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 51 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 51 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:10:37,460 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 01:10:37,511 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 01:10:37,512 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:10:37,515 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:10:38,995 INFO L134 CoverageAnalysis]: Checked inductivity of 2550 backedges. 0 proven. 2550 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:10:39,014 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:10:39,014 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [51, 51] total 102 [2018-10-01 01:10:39,015 INFO L459 AbstractCegarLoop]: Interpolant automaton has 104 states [2018-10-01 01:10:39,016 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 104 interpolants. [2018-10-01 01:10:39,016 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:10:39,016 INFO L87 Difference]: Start difference. First operand 104 states and 104 transitions. Second operand 104 states. [2018-10-01 01:10:41,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:10:41,090 INFO L93 Difference]: Finished difference Result 107 states and 107 transitions. [2018-10-01 01:10:41,090 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2018-10-01 01:10:41,091 INFO L78 Accepts]: Start accepts. Automaton has 104 states. Word has length 103 [2018-10-01 01:10:41,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:10:41,091 INFO L225 Difference]: With dead ends: 107 [2018-10-01 01:10:41,091 INFO L226 Difference]: Without dead ends: 106 [2018-10-01 01:10:41,092 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8s Time [2018-10-01 01:10:41,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2018-10-01 01:10:41,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 106. [2018-10-01 01:10:41,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2018-10-01 01:10:41,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 106 transitions. [2018-10-01 01:10:41,096 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 106 transitions. Word has length 103 [2018-10-01 01:10:41,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:10:41,097 INFO L480 AbstractCegarLoop]: Abstraction has 106 states and 106 transitions. [2018-10-01 01:10:41,097 INFO L481 AbstractCegarLoop]: Interpolant automaton has 104 states. [2018-10-01 01:10:41,097 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 106 transitions. [2018-10-01 01:10:41,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2018-10-01 01:10:41,098 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:10:41,098 INFO L375 BasicCegarLoop]: trace histogram [52, 51, 1, 1] [2018-10-01 01:10:41,098 INFO L423 AbstractCegarLoop]: === Iteration 52 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:10:41,098 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:10:41,098 INFO L82 PathProgramCache]: Analyzing trace with hash 1799123078, now seen corresponding path program 51 times [2018-10-01 01:10:41,098 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:10:41,099 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:10:41,099 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:10:41,099 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:10:41,099 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:10:41,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:10:41,848 INFO L134 CoverageAnalysis]: Checked inductivity of 2652 backedges. 0 proven. 2652 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:10:41,848 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:10:41,849 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 52 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 52 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:10:41,855 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 01:10:41,905 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 52 check-sat command(s) [2018-10-01 01:10:41,905 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:10:41,907 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:10:42,782 INFO L134 CoverageAnalysis]: Checked inductivity of 2652 backedges. 0 proven. 2652 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:10:42,801 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:10:42,802 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [52, 52] total 104 [2018-10-01 01:10:42,802 INFO L459 AbstractCegarLoop]: Interpolant automaton has 106 states [2018-10-01 01:10:42,803 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 106 interpolants. [2018-10-01 01:10:42,803 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:10:42,803 INFO L87 Difference]: Start difference. First operand 106 states and 106 transitions. Second operand 106 states. [2018-10-01 01:10:43,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:10:43,580 INFO L93 Difference]: Finished difference Result 109 states and 109 transitions. [2018-10-01 01:10:43,580 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2018-10-01 01:10:43,580 INFO L78 Accepts]: Start accepts. Automaton has 106 states. Word has length 105 [2018-10-01 01:10:43,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:10:43,581 INFO L225 Difference]: With dead ends: 109 [2018-10-01 01:10:43,581 INFO L226 Difference]: Without dead ends: 108 [2018-10-01 01:10:43,581 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5s Time [2018-10-01 01:10:43,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2018-10-01 01:10:43,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 108. [2018-10-01 01:10:43,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2018-10-01 01:10:43,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 108 transitions. [2018-10-01 01:10:43,585 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 108 transitions. Word has length 105 [2018-10-01 01:10:43,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:10:43,586 INFO L480 AbstractCegarLoop]: Abstraction has 108 states and 108 transitions. [2018-10-01 01:10:43,586 INFO L481 AbstractCegarLoop]: Interpolant automaton has 106 states. [2018-10-01 01:10:43,586 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 108 transitions. [2018-10-01 01:10:43,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2018-10-01 01:10:43,586 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:10:43,586 INFO L375 BasicCegarLoop]: trace histogram [53, 52, 1, 1] [2018-10-01 01:10:43,587 INFO L423 AbstractCegarLoop]: === Iteration 53 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:10:43,587 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:10:43,587 INFO L82 PathProgramCache]: Analyzing trace with hash -1914541240, now seen corresponding path program 52 times [2018-10-01 01:10:43,587 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:10:43,587 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:10:43,588 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:10:43,588 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:10:43,588 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:10:43,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:10:43,910 INFO L134 CoverageAnalysis]: Checked inductivity of 2756 backedges. 0 proven. 2756 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:10:43,911 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:10:43,911 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 53 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 53 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:10:43,925 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 01:10:43,971 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 01:10:43,972 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:10:43,975 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:10:44,987 INFO L134 CoverageAnalysis]: Checked inductivity of 2756 backedges. 0 proven. 2756 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:10:45,008 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:10:45,008 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [53, 53] total 106 [2018-10-01 01:10:45,008 INFO L459 AbstractCegarLoop]: Interpolant automaton has 108 states [2018-10-01 01:10:45,009 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 108 interpolants. [2018-10-01 01:10:45,009 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:10:45,009 INFO L87 Difference]: Start difference. First operand 108 states and 108 transitions. Second operand 108 states. [2018-10-01 01:10:45,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:10:45,969 INFO L93 Difference]: Finished difference Result 111 states and 111 transitions. [2018-10-01 01:10:45,969 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2018-10-01 01:10:45,970 INFO L78 Accepts]: Start accepts. Automaton has 108 states. Word has length 107 [2018-10-01 01:10:45,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:10:45,971 INFO L225 Difference]: With dead ends: 111 [2018-10-01 01:10:45,971 INFO L226 Difference]: Without dead ends: 110 [2018-10-01 01:10:45,971 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s Time [2018-10-01 01:10:45,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2018-10-01 01:10:45,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 110. [2018-10-01 01:10:45,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2018-10-01 01:10:45,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 110 transitions. [2018-10-01 01:10:45,974 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 110 transitions. Word has length 107 [2018-10-01 01:10:45,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:10:45,974 INFO L480 AbstractCegarLoop]: Abstraction has 110 states and 110 transitions. [2018-10-01 01:10:45,974 INFO L481 AbstractCegarLoop]: Interpolant automaton has 108 states. [2018-10-01 01:10:45,975 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 110 transitions. [2018-10-01 01:10:45,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2018-10-01 01:10:45,975 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:10:45,975 INFO L375 BasicCegarLoop]: trace histogram [54, 53, 1, 1] [2018-10-01 01:10:45,976 INFO L423 AbstractCegarLoop]: === Iteration 54 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:10:45,976 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:10:45,976 INFO L82 PathProgramCache]: Analyzing trace with hash -1628127862, now seen corresponding path program 53 times [2018-10-01 01:10:45,976 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:10:45,976 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:10:45,977 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:10:45,977 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:10:45,977 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:10:45,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:10:46,305 INFO L134 CoverageAnalysis]: Checked inductivity of 2862 backedges. 0 proven. 2862 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:10:46,306 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:10:46,306 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 54 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 54 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:10:46,321 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 01:10:46,455 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 54 check-sat command(s) [2018-10-01 01:10:46,455 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:10:46,458 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:10:47,188 INFO L134 CoverageAnalysis]: Checked inductivity of 2862 backedges. 0 proven. 2862 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:10:47,209 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:10:47,210 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [54, 54] total 108 [2018-10-01 01:10:47,210 INFO L459 AbstractCegarLoop]: Interpolant automaton has 110 states [2018-10-01 01:10:47,211 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 110 interpolants. [2018-10-01 01:10:47,211 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:10:47,211 INFO L87 Difference]: Start difference. First operand 110 states and 110 transitions. Second operand 110 states. [2018-10-01 01:10:47,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:10:47,984 INFO L93 Difference]: Finished difference Result 113 states and 113 transitions. [2018-10-01 01:10:47,985 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2018-10-01 01:10:47,985 INFO L78 Accepts]: Start accepts. Automaton has 110 states. Word has length 109 [2018-10-01 01:10:47,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:10:47,986 INFO L225 Difference]: With dead ends: 113 [2018-10-01 01:10:47,986 INFO L226 Difference]: Without dead ends: 112 [2018-10-01 01:10:47,986 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s Time [2018-10-01 01:10:47,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2018-10-01 01:10:47,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 112. [2018-10-01 01:10:47,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2018-10-01 01:10:47,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 112 transitions. [2018-10-01 01:10:47,989 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 112 transitions. Word has length 109 [2018-10-01 01:10:47,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:10:47,989 INFO L480 AbstractCegarLoop]: Abstraction has 112 states and 112 transitions. [2018-10-01 01:10:47,989 INFO L481 AbstractCegarLoop]: Interpolant automaton has 110 states. [2018-10-01 01:10:47,989 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 112 transitions. [2018-10-01 01:10:47,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2018-10-01 01:10:47,990 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:10:47,990 INFO L375 BasicCegarLoop]: trace histogram [55, 54, 1, 1] [2018-10-01 01:10:47,990 INFO L423 AbstractCegarLoop]: === Iteration 55 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:10:47,990 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:10:47,990 INFO L82 PathProgramCache]: Analyzing trace with hash -1262778548, now seen corresponding path program 54 times [2018-10-01 01:10:47,990 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:10:47,990 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:10:47,991 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:10:47,991 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:10:47,991 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:10:48,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:10:48,798 INFO L134 CoverageAnalysis]: Checked inductivity of 2970 backedges. 0 proven. 2970 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:10:48,799 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:10:48,799 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 55 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 55 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:10:48,807 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 01:10:48,862 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 55 check-sat command(s) [2018-10-01 01:10:48,862 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:10:48,864 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:10:49,701 INFO L134 CoverageAnalysis]: Checked inductivity of 2970 backedges. 0 proven. 2970 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:10:49,721 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:10:49,721 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [55, 55] total 110 [2018-10-01 01:10:49,721 INFO L459 AbstractCegarLoop]: Interpolant automaton has 112 states [2018-10-01 01:10:49,722 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 112 interpolants. [2018-10-01 01:10:49,722 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:10:49,723 INFO L87 Difference]: Start difference. First operand 112 states and 112 transitions. Second operand 112 states. [2018-10-01 01:10:50,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:10:50,679 INFO L93 Difference]: Finished difference Result 115 states and 115 transitions. [2018-10-01 01:10:50,679 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2018-10-01 01:10:50,680 INFO L78 Accepts]: Start accepts. Automaton has 112 states. Word has length 111 [2018-10-01 01:10:50,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:10:50,680 INFO L225 Difference]: With dead ends: 115 [2018-10-01 01:10:50,681 INFO L226 Difference]: Without dead ends: 114 [2018-10-01 01:10:50,681 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5s Time [2018-10-01 01:10:50,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2018-10-01 01:10:50,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 114. [2018-10-01 01:10:50,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2018-10-01 01:10:50,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 114 transitions. [2018-10-01 01:10:50,684 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 114 transitions. Word has length 111 [2018-10-01 01:10:50,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:10:50,685 INFO L480 AbstractCegarLoop]: Abstraction has 114 states and 114 transitions. [2018-10-01 01:10:50,685 INFO L481 AbstractCegarLoop]: Interpolant automaton has 112 states. [2018-10-01 01:10:50,685 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 114 transitions. [2018-10-01 01:10:50,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2018-10-01 01:10:50,685 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:10:50,686 INFO L375 BasicCegarLoop]: trace histogram [56, 55, 1, 1] [2018-10-01 01:10:50,686 INFO L423 AbstractCegarLoop]: === Iteration 56 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:10:50,686 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:10:50,686 INFO L82 PathProgramCache]: Analyzing trace with hash 1945561230, now seen corresponding path program 55 times [2018-10-01 01:10:50,686 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:10:50,686 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:10:50,687 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:10:50,687 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:10:50,687 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:10:50,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:10:51,035 INFO L134 CoverageAnalysis]: Checked inductivity of 3080 backedges. 0 proven. 3080 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:10:51,036 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:10:51,036 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 56 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 56 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:10:51,043 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:10:51,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:10:51,076 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:10:51,826 INFO L134 CoverageAnalysis]: Checked inductivity of 3080 backedges. 0 proven. 3080 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:10:51,846 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:10:51,846 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [56, 56] total 112 [2018-10-01 01:10:51,846 INFO L459 AbstractCegarLoop]: Interpolant automaton has 114 states [2018-10-01 01:10:51,847 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 114 interpolants. [2018-10-01 01:10:51,847 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:10:51,848 INFO L87 Difference]: Start difference. First operand 114 states and 114 transitions. Second operand 114 states. [2018-10-01 01:10:52,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:10:52,617 INFO L93 Difference]: Finished difference Result 117 states and 117 transitions. [2018-10-01 01:10:52,617 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2018-10-01 01:10:52,617 INFO L78 Accepts]: Start accepts. Automaton has 114 states. Word has length 113 [2018-10-01 01:10:52,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:10:52,618 INFO L225 Difference]: With dead ends: 117 [2018-10-01 01:10:52,618 INFO L226 Difference]: Without dead ends: 116 [2018-10-01 01:10:52,618 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s Time [2018-10-01 01:10:52,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2018-10-01 01:10:52,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 116. [2018-10-01 01:10:52,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2018-10-01 01:10:52,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 116 transitions. [2018-10-01 01:10:52,623 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 116 transitions. Word has length 113 [2018-10-01 01:10:52,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:10:52,623 INFO L480 AbstractCegarLoop]: Abstraction has 116 states and 116 transitions. [2018-10-01 01:10:52,623 INFO L481 AbstractCegarLoop]: Interpolant automaton has 114 states. [2018-10-01 01:10:52,623 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 116 transitions. [2018-10-01 01:10:52,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2018-10-01 01:10:52,624 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:10:52,624 INFO L375 BasicCegarLoop]: trace histogram [57, 56, 1, 1] [2018-10-01 01:10:52,624 INFO L423 AbstractCegarLoop]: === Iteration 57 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:10:52,624 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:10:52,625 INFO L82 PathProgramCache]: Analyzing trace with hash 1373569360, now seen corresponding path program 56 times [2018-10-01 01:10:52,625 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:10:52,625 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:10:52,625 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:10:52,625 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:10:52,626 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:10:52,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:10:54,748 INFO L134 CoverageAnalysis]: Checked inductivity of 3192 backedges. 0 proven. 3192 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:10:54,748 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:10:54,748 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 57 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 57 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:10:54,755 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 01:10:54,786 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 01:10:54,786 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:10:54,788 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:10:55,583 INFO L134 CoverageAnalysis]: Checked inductivity of 3192 backedges. 0 proven. 3192 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:10:55,603 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:10:55,603 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [57, 57] total 114 [2018-10-01 01:10:55,604 INFO L459 AbstractCegarLoop]: Interpolant automaton has 116 states [2018-10-01 01:10:55,605 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 116 interpolants. [2018-10-01 01:10:55,605 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:10:55,605 INFO L87 Difference]: Start difference. First operand 116 states and 116 transitions. Second operand 116 states. [2018-10-01 01:10:56,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:10:56,571 INFO L93 Difference]: Finished difference Result 119 states and 119 transitions. [2018-10-01 01:10:56,572 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2018-10-01 01:10:56,572 INFO L78 Accepts]: Start accepts. Automaton has 116 states. Word has length 115 [2018-10-01 01:10:56,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:10:56,573 INFO L225 Difference]: With dead ends: 119 [2018-10-01 01:10:56,573 INFO L226 Difference]: Without dead ends: 118 [2018-10-01 01:10:56,573 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.7s Time [2018-10-01 01:10:56,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2018-10-01 01:10:56,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 118. [2018-10-01 01:10:56,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2018-10-01 01:10:56,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 118 transitions. [2018-10-01 01:10:56,576 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 118 transitions. Word has length 115 [2018-10-01 01:10:56,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:10:56,577 INFO L480 AbstractCegarLoop]: Abstraction has 118 states and 118 transitions. [2018-10-01 01:10:56,577 INFO L481 AbstractCegarLoop]: Interpolant automaton has 116 states. [2018-10-01 01:10:56,577 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 118 transitions. [2018-10-01 01:10:56,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2018-10-01 01:10:56,577 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:10:56,577 INFO L375 BasicCegarLoop]: trace histogram [58, 57, 1, 1] [2018-10-01 01:10:56,578 INFO L423 AbstractCegarLoop]: === Iteration 58 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:10:56,578 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:10:56,578 INFO L82 PathProgramCache]: Analyzing trace with hash 1445196178, now seen corresponding path program 57 times [2018-10-01 01:10:56,578 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:10:56,578 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:10:56,578 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:10:56,578 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:10:56,579 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:10:56,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:10:57,039 INFO L134 CoverageAnalysis]: Checked inductivity of 3306 backedges. 0 proven. 3306 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:10:57,039 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:10:57,040 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 58 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 58 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:10:57,047 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 01:10:57,107 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 58 check-sat command(s) [2018-10-01 01:10:57,107 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:10:57,110 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:10:58,071 INFO L134 CoverageAnalysis]: Checked inductivity of 3306 backedges. 0 proven. 3306 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:10:58,091 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:10:58,091 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [58, 58] total 116 [2018-10-01 01:10:58,091 INFO L459 AbstractCegarLoop]: Interpolant automaton has 118 states [2018-10-01 01:10:58,092 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 118 interpolants. [2018-10-01 01:10:58,092 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:10:58,093 INFO L87 Difference]: Start difference. First operand 118 states and 118 transitions. Second operand 118 states. [2018-10-01 01:10:58,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:10:58,880 INFO L93 Difference]: Finished difference Result 121 states and 121 transitions. [2018-10-01 01:10:58,880 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2018-10-01 01:10:58,880 INFO L78 Accepts]: Start accepts. Automaton has 118 states. Word has length 117 [2018-10-01 01:10:58,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:10:58,881 INFO L225 Difference]: With dead ends: 121 [2018-10-01 01:10:58,881 INFO L226 Difference]: Without dead ends: 120 [2018-10-01 01:10:58,881 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 116 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s Time [2018-10-01 01:10:58,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2018-10-01 01:10:58,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 120. [2018-10-01 01:10:58,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2018-10-01 01:10:58,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 120 transitions. [2018-10-01 01:10:58,884 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 120 transitions. Word has length 117 [2018-10-01 01:10:58,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:10:58,884 INFO L480 AbstractCegarLoop]: Abstraction has 120 states and 120 transitions. [2018-10-01 01:10:58,884 INFO L481 AbstractCegarLoop]: Interpolant automaton has 118 states. [2018-10-01 01:10:58,885 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 120 transitions. [2018-10-01 01:10:58,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2018-10-01 01:10:58,885 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:10:58,885 INFO L375 BasicCegarLoop]: trace histogram [59, 58, 1, 1] [2018-10-01 01:10:58,886 INFO L423 AbstractCegarLoop]: === Iteration 59 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:10:58,886 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:10:58,886 INFO L82 PathProgramCache]: Analyzing trace with hash 1559091540, now seen corresponding path program 58 times [2018-10-01 01:10:58,886 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:10:58,886 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:10:58,887 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:10:58,887 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:10:58,887 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:10:58,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:10:59,244 INFO L134 CoverageAnalysis]: Checked inductivity of 3422 backedges. 0 proven. 3422 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:10:59,244 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:10:59,244 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 59 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 59 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:10:59,252 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 01:10:59,286 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 01:10:59,287 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:10:59,289 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:11:00,276 INFO L134 CoverageAnalysis]: Checked inductivity of 3422 backedges. 0 proven. 3422 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:11:00,297 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:11:00,297 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [59, 59] total 118 [2018-10-01 01:11:00,297 INFO L459 AbstractCegarLoop]: Interpolant automaton has 120 states [2018-10-01 01:11:00,298 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 120 interpolants. [2018-10-01 01:11:00,298 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:11:00,298 INFO L87 Difference]: Start difference. First operand 120 states and 120 transitions. Second operand 120 states. [2018-10-01 01:11:01,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:11:01,042 INFO L93 Difference]: Finished difference Result 123 states and 123 transitions. [2018-10-01 01:11:01,043 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2018-10-01 01:11:01,043 INFO L78 Accepts]: Start accepts. Automaton has 120 states. Word has length 119 [2018-10-01 01:11:01,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:11:01,044 INFO L225 Difference]: With dead ends: 123 [2018-10-01 01:11:01,044 INFO L226 Difference]: Without dead ends: 122 [2018-10-01 01:11:01,044 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 118 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s Time [2018-10-01 01:11:01,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2018-10-01 01:11:01,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 122. [2018-10-01 01:11:01,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2018-10-01 01:11:01,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 122 transitions. [2018-10-01 01:11:01,048 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 122 transitions. Word has length 119 [2018-10-01 01:11:01,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:11:01,049 INFO L480 AbstractCegarLoop]: Abstraction has 122 states and 122 transitions. [2018-10-01 01:11:01,049 INFO L481 AbstractCegarLoop]: Interpolant automaton has 120 states. [2018-10-01 01:11:01,049 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 122 transitions. [2018-10-01 01:11:01,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2018-10-01 01:11:01,050 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:11:01,050 INFO L375 BasicCegarLoop]: trace histogram [60, 59, 1, 1] [2018-10-01 01:11:01,050 INFO L423 AbstractCegarLoop]: === Iteration 60 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:11:01,050 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:11:01,050 INFO L82 PathProgramCache]: Analyzing trace with hash -656615274, now seen corresponding path program 59 times [2018-10-01 01:11:01,050 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:11:01,051 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:11:01,051 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:11:01,051 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:11:01,051 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:11:01,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:11:01,467 INFO L134 CoverageAnalysis]: Checked inductivity of 3540 backedges. 0 proven. 3540 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:11:01,467 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:11:01,467 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 60 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 60 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:11:01,484 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 01:11:01,597 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 60 check-sat command(s) [2018-10-01 01:11:01,597 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:11:01,600 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:11:02,559 INFO L134 CoverageAnalysis]: Checked inductivity of 3540 backedges. 0 proven. 3540 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:11:02,579 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:11:02,579 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [60, 60] total 120 [2018-10-01 01:11:02,579 INFO L459 AbstractCegarLoop]: Interpolant automaton has 122 states [2018-10-01 01:11:02,581 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 122 interpolants. [2018-10-01 01:11:02,581 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:11:02,581 INFO L87 Difference]: Start difference. First operand 122 states and 122 transitions. Second operand 122 states. [2018-10-01 01:11:03,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:11:03,834 INFO L93 Difference]: Finished difference Result 125 states and 125 transitions. [2018-10-01 01:11:03,835 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2018-10-01 01:11:03,835 INFO L78 Accepts]: Start accepts. Automaton has 122 states. Word has length 121 [2018-10-01 01:11:03,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:11:03,835 INFO L225 Difference]: With dead ends: 125 [2018-10-01 01:11:03,835 INFO L226 Difference]: Without dead ends: 124 [2018-10-01 01:11:03,836 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 120 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s Time [2018-10-01 01:11:03,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2018-10-01 01:11:03,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 124. [2018-10-01 01:11:03,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2018-10-01 01:11:03,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 124 transitions. [2018-10-01 01:11:03,841 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 124 transitions. Word has length 121 [2018-10-01 01:11:03,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:11:03,841 INFO L480 AbstractCegarLoop]: Abstraction has 124 states and 124 transitions. [2018-10-01 01:11:03,841 INFO L481 AbstractCegarLoop]: Interpolant automaton has 122 states. [2018-10-01 01:11:03,841 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 124 transitions. [2018-10-01 01:11:03,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2018-10-01 01:11:03,842 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:11:03,842 INFO L375 BasicCegarLoop]: trace histogram [61, 60, 1, 1] [2018-10-01 01:11:03,842 INFO L423 AbstractCegarLoop]: === Iteration 61 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:11:03,843 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:11:03,843 INFO L82 PathProgramCache]: Analyzing trace with hash 352915288, now seen corresponding path program 60 times [2018-10-01 01:11:03,843 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:11:03,843 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:11:03,844 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:11:03,844 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:11:03,844 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:11:03,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:11:04,228 INFO L134 CoverageAnalysis]: Checked inductivity of 3660 backedges. 0 proven. 3660 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:11:04,228 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:11:04,228 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 61 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 61 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:11:04,236 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 01:11:04,300 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 61 check-sat command(s) [2018-10-01 01:11:04,300 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:11:04,303 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:11:05,191 INFO L134 CoverageAnalysis]: Checked inductivity of 3660 backedges. 0 proven. 3660 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:11:05,211 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:11:05,211 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [61, 61] total 122 [2018-10-01 01:11:05,211 INFO L459 AbstractCegarLoop]: Interpolant automaton has 124 states [2018-10-01 01:11:05,212 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 124 interpolants. [2018-10-01 01:11:05,213 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:11:05,213 INFO L87 Difference]: Start difference. First operand 124 states and 124 transitions. Second operand 124 states. [2018-10-01 01:11:06,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:11:06,189 INFO L93 Difference]: Finished difference Result 127 states and 127 transitions. [2018-10-01 01:11:06,189 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2018-10-01 01:11:06,189 INFO L78 Accepts]: Start accepts. Automaton has 124 states. Word has length 123 [2018-10-01 01:11:06,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:11:06,190 INFO L225 Difference]: With dead ends: 127 [2018-10-01 01:11:06,190 INFO L226 Difference]: Without dead ends: 126 [2018-10-01 01:11:06,190 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 122 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s Time [2018-10-01 01:11:06,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2018-10-01 01:11:06,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 126. [2018-10-01 01:11:06,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126 states. [2018-10-01 01:11:06,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 126 transitions. [2018-10-01 01:11:06,195 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 126 transitions. Word has length 123 [2018-10-01 01:11:06,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:11:06,195 INFO L480 AbstractCegarLoop]: Abstraction has 126 states and 126 transitions. [2018-10-01 01:11:06,195 INFO L481 AbstractCegarLoop]: Interpolant automaton has 124 states. [2018-10-01 01:11:06,195 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 126 transitions. [2018-10-01 01:11:06,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2018-10-01 01:11:06,196 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:11:06,196 INFO L375 BasicCegarLoop]: trace histogram [62, 61, 1, 1] [2018-10-01 01:11:06,196 INFO L423 AbstractCegarLoop]: === Iteration 62 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:11:06,196 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:11:06,197 INFO L82 PathProgramCache]: Analyzing trace with hash -150823526, now seen corresponding path program 61 times [2018-10-01 01:11:06,197 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:11:06,197 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:11:06,197 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:11:06,197 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:11:06,197 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:11:06,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:11:07,551 INFO L134 CoverageAnalysis]: Checked inductivity of 3782 backedges. 0 proven. 3782 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:11:07,551 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:11:07,551 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 62 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 62 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:11:07,559 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:11:07,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:11:07,594 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:11:08,663 INFO L134 CoverageAnalysis]: Checked inductivity of 3782 backedges. 0 proven. 3782 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:11:08,683 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:11:08,683 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [62, 62] total 124 [2018-10-01 01:11:08,683 INFO L459 AbstractCegarLoop]: Interpolant automaton has 126 states [2018-10-01 01:11:08,685 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 126 interpolants. [2018-10-01 01:11:08,685 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:11:08,685 INFO L87 Difference]: Start difference. First operand 126 states and 126 transitions. Second operand 126 states. [2018-10-01 01:11:09,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:11:09,622 INFO L93 Difference]: Finished difference Result 129 states and 129 transitions. [2018-10-01 01:11:09,622 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2018-10-01 01:11:09,622 INFO L78 Accepts]: Start accepts. Automaton has 126 states. Word has length 125 [2018-10-01 01:11:09,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:11:09,623 INFO L225 Difference]: With dead ends: 129 [2018-10-01 01:11:09,623 INFO L226 Difference]: Without dead ends: 128 [2018-10-01 01:11:09,623 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 124 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.3s Time [2018-10-01 01:11:09,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2018-10-01 01:11:09,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 128. [2018-10-01 01:11:09,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2018-10-01 01:11:09,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 128 transitions. [2018-10-01 01:11:09,626 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 128 transitions. Word has length 125 [2018-10-01 01:11:09,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:11:09,626 INFO L480 AbstractCegarLoop]: Abstraction has 128 states and 128 transitions. [2018-10-01 01:11:09,626 INFO L481 AbstractCegarLoop]: Interpolant automaton has 126 states. [2018-10-01 01:11:09,626 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 128 transitions. [2018-10-01 01:11:09,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2018-10-01 01:11:09,627 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:11:09,627 INFO L375 BasicCegarLoop]: trace histogram [63, 62, 1, 1] [2018-10-01 01:11:09,627 INFO L423 AbstractCegarLoop]: === Iteration 63 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:11:09,627 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:11:09,627 INFO L82 PathProgramCache]: Analyzing trace with hash 1087480668, now seen corresponding path program 62 times [2018-10-01 01:11:09,627 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:11:09,627 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:11:09,628 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:11:09,628 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:11:09,628 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:11:09,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:11:10,821 INFO L134 CoverageAnalysis]: Checked inductivity of 3906 backedges. 0 proven. 3906 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:11:10,821 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:11:10,821 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 63 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 63 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:11:10,831 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 01:11:10,865 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 01:11:10,865 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:11:10,867 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:11:11,792 INFO L134 CoverageAnalysis]: Checked inductivity of 3906 backedges. 0 proven. 3906 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:11:11,811 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:11:11,812 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [63, 63] total 126 [2018-10-01 01:11:11,812 INFO L459 AbstractCegarLoop]: Interpolant automaton has 128 states [2018-10-01 01:11:11,813 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 128 interpolants. [2018-10-01 01:11:11,813 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:11:11,813 INFO L87 Difference]: Start difference. First operand 128 states and 128 transitions. Second operand 128 states. [2018-10-01 01:11:12,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:11:12,766 INFO L93 Difference]: Finished difference Result 131 states and 131 transitions. [2018-10-01 01:11:12,766 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2018-10-01 01:11:12,767 INFO L78 Accepts]: Start accepts. Automaton has 128 states. Word has length 127 [2018-10-01 01:11:12,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:11:12,767 INFO L225 Difference]: With dead ends: 131 [2018-10-01 01:11:12,767 INFO L226 Difference]: Without dead ends: 130 [2018-10-01 01:11:12,768 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 126 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.0s Time [2018-10-01 01:11:12,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2018-10-01 01:11:12,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 130. [2018-10-01 01:11:12,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2018-10-01 01:11:12,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 130 transitions. [2018-10-01 01:11:12,771 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 130 transitions. Word has length 127 [2018-10-01 01:11:12,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:11:12,772 INFO L480 AbstractCegarLoop]: Abstraction has 130 states and 130 transitions. [2018-10-01 01:11:12,772 INFO L481 AbstractCegarLoop]: Interpolant automaton has 128 states. [2018-10-01 01:11:12,772 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 130 transitions. [2018-10-01 01:11:12,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2018-10-01 01:11:12,773 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:11:12,773 INFO L375 BasicCegarLoop]: trace histogram [64, 63, 1, 1] [2018-10-01 01:11:12,773 INFO L423 AbstractCegarLoop]: === Iteration 64 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:11:12,773 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:11:12,773 INFO L82 PathProgramCache]: Analyzing trace with hash 1391870110, now seen corresponding path program 63 times [2018-10-01 01:11:12,774 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:11:12,774 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:11:12,774 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:11:12,774 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:11:12,774 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:11:12,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:11:13,403 INFO L134 CoverageAnalysis]: Checked inductivity of 4032 backedges. 0 proven. 4032 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:11:13,403 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:11:13,403 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 64 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 64 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:11:13,412 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 01:11:13,478 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 64 check-sat command(s) [2018-10-01 01:11:13,478 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:11:13,480 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:11:14,399 INFO L134 CoverageAnalysis]: Checked inductivity of 4032 backedges. 0 proven. 4032 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:11:14,419 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:11:14,419 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [64, 64] total 128 [2018-10-01 01:11:14,419 INFO L459 AbstractCegarLoop]: Interpolant automaton has 130 states [2018-10-01 01:11:14,421 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 130 interpolants. [2018-10-01 01:11:14,421 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:11:14,421 INFO L87 Difference]: Start difference. First operand 130 states and 130 transitions. Second operand 130 states. [2018-10-01 01:11:15,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:11:15,361 INFO L93 Difference]: Finished difference Result 133 states and 133 transitions. [2018-10-01 01:11:15,362 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2018-10-01 01:11:15,362 INFO L78 Accepts]: Start accepts. Automaton has 130 states. Word has length 129 [2018-10-01 01:11:15,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:11:15,362 INFO L225 Difference]: With dead ends: 133 [2018-10-01 01:11:15,363 INFO L226 Difference]: Without dead ends: 132 [2018-10-01 01:11:15,363 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 128 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s Time [2018-10-01 01:11:15,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2018-10-01 01:11:15,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 132. [2018-10-01 01:11:15,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2018-10-01 01:11:15,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 132 transitions. [2018-10-01 01:11:15,366 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 132 transitions. Word has length 129 [2018-10-01 01:11:15,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:11:15,367 INFO L480 AbstractCegarLoop]: Abstraction has 132 states and 132 transitions. [2018-10-01 01:11:15,367 INFO L481 AbstractCegarLoop]: Interpolant automaton has 130 states. [2018-10-01 01:11:15,367 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 132 transitions. [2018-10-01 01:11:15,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2018-10-01 01:11:15,367 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:11:15,368 INFO L375 BasicCegarLoop]: trace histogram [65, 64, 1, 1] [2018-10-01 01:11:15,368 INFO L423 AbstractCegarLoop]: === Iteration 65 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:11:15,368 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:11:15,368 INFO L82 PathProgramCache]: Analyzing trace with hash 1852347744, now seen corresponding path program 64 times [2018-10-01 01:11:15,368 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:11:15,368 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:11:15,369 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:11:15,369 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:11:15,369 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:11:15,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:11:15,826 INFO L134 CoverageAnalysis]: Checked inductivity of 4160 backedges. 0 proven. 4160 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:11:15,826 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:11:15,826 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 65 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 65 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:11:15,835 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 01:11:15,867 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 01:11:15,867 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:11:15,870 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:11:16,812 INFO L134 CoverageAnalysis]: Checked inductivity of 4160 backedges. 0 proven. 4160 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:11:16,832 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:11:16,833 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [65, 65] total 130 [2018-10-01 01:11:16,833 INFO L459 AbstractCegarLoop]: Interpolant automaton has 132 states [2018-10-01 01:11:16,834 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 132 interpolants. [2018-10-01 01:11:16,834 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:11:16,835 INFO L87 Difference]: Start difference. First operand 132 states and 132 transitions. Second operand 132 states. [2018-10-01 01:11:17,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:11:17,831 INFO L93 Difference]: Finished difference Result 135 states and 135 transitions. [2018-10-01 01:11:17,831 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2018-10-01 01:11:17,832 INFO L78 Accepts]: Start accepts. Automaton has 132 states. Word has length 131 [2018-10-01 01:11:17,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:11:17,833 INFO L225 Difference]: With dead ends: 135 [2018-10-01 01:11:17,833 INFO L226 Difference]: Without dead ends: 134 [2018-10-01 01:11:17,833 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 130 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s Time [2018-10-01 01:11:17,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2018-10-01 01:11:17,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 134. [2018-10-01 01:11:17,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2018-10-01 01:11:17,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 134 transitions. [2018-10-01 01:11:17,837 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 134 transitions. Word has length 131 [2018-10-01 01:11:17,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:11:17,838 INFO L480 AbstractCegarLoop]: Abstraction has 134 states and 134 transitions. [2018-10-01 01:11:17,838 INFO L481 AbstractCegarLoop]: Interpolant automaton has 132 states. [2018-10-01 01:11:17,838 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 134 transitions. [2018-10-01 01:11:17,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2018-10-01 01:11:17,839 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:11:17,839 INFO L375 BasicCegarLoop]: trace histogram [66, 65, 1, 1] [2018-10-01 01:11:17,839 INFO L423 AbstractCegarLoop]: === Iteration 66 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:11:17,840 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:11:17,840 INFO L82 PathProgramCache]: Analyzing trace with hash 1989722530, now seen corresponding path program 65 times [2018-10-01 01:11:17,840 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:11:17,840 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:11:17,841 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:11:17,841 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:11:17,841 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:11:17,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:11:18,601 INFO L134 CoverageAnalysis]: Checked inductivity of 4290 backedges. 0 proven. 4290 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:11:18,601 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:11:18,601 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 66 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 66 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:11:18,608 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 01:11:18,689 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 66 check-sat command(s) [2018-10-01 01:11:18,689 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:11:18,693 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:11:20,994 INFO L134 CoverageAnalysis]: Checked inductivity of 4290 backedges. 0 proven. 4290 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:11:21,014 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:11:21,015 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [66, 66] total 132 [2018-10-01 01:11:21,015 INFO L459 AbstractCegarLoop]: Interpolant automaton has 134 states [2018-10-01 01:11:21,017 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 134 interpolants. [2018-10-01 01:11:21,017 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:11:21,017 INFO L87 Difference]: Start difference. First operand 134 states and 134 transitions. Second operand 134 states. [2018-10-01 01:11:22,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:11:22,081 INFO L93 Difference]: Finished difference Result 137 states and 137 transitions. [2018-10-01 01:11:22,082 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2018-10-01 01:11:22,082 INFO L78 Accepts]: Start accepts. Automaton has 134 states. Word has length 133 [2018-10-01 01:11:22,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:11:22,083 INFO L225 Difference]: With dead ends: 137 [2018-10-01 01:11:22,083 INFO L226 Difference]: Without dead ends: 136 [2018-10-01 01:11:22,083 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 132 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.9s Time [2018-10-01 01:11:22,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2018-10-01 01:11:22,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 136. [2018-10-01 01:11:22,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states. [2018-10-01 01:11:22,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 136 transitions. [2018-10-01 01:11:22,087 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 136 transitions. Word has length 133 [2018-10-01 01:11:22,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:11:22,088 INFO L480 AbstractCegarLoop]: Abstraction has 136 states and 136 transitions. [2018-10-01 01:11:22,088 INFO L481 AbstractCegarLoop]: Interpolant automaton has 134 states. [2018-10-01 01:11:22,088 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 136 transitions. [2018-10-01 01:11:22,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2018-10-01 01:11:22,088 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:11:22,089 INFO L375 BasicCegarLoop]: trace histogram [67, 66, 1, 1] [2018-10-01 01:11:22,089 INFO L423 AbstractCegarLoop]: === Iteration 67 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:11:22,089 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:11:22,089 INFO L82 PathProgramCache]: Analyzing trace with hash 862905700, now seen corresponding path program 66 times [2018-10-01 01:11:22,089 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:11:22,089 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:11:22,090 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:11:22,090 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:11:22,090 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:11:22,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:11:22,549 INFO L134 CoverageAnalysis]: Checked inductivity of 4422 backedges. 0 proven. 4422 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:11:22,549 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:11:22,549 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 67 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 67 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:11:22,556 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 01:11:22,626 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 67 check-sat command(s) [2018-10-01 01:11:22,626 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:11:22,629 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:11:23,916 INFO L134 CoverageAnalysis]: Checked inductivity of 4422 backedges. 0 proven. 4422 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:11:23,936 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:11:23,936 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [67, 67] total 134 [2018-10-01 01:11:23,937 INFO L459 AbstractCegarLoop]: Interpolant automaton has 136 states [2018-10-01 01:11:23,938 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 136 interpolants. [2018-10-01 01:11:23,938 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:11:23,938 INFO L87 Difference]: Start difference. First operand 136 states and 136 transitions. Second operand 136 states. [2018-10-01 01:11:25,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:11:25,101 INFO L93 Difference]: Finished difference Result 139 states and 139 transitions. [2018-10-01 01:11:25,101 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2018-10-01 01:11:25,101 INFO L78 Accepts]: Start accepts. Automaton has 136 states. Word has length 135 [2018-10-01 01:11:25,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:11:25,102 INFO L225 Difference]: With dead ends: 139 [2018-10-01 01:11:25,102 INFO L226 Difference]: Without dead ends: 138 [2018-10-01 01:11:25,102 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 134 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6s Time [2018-10-01 01:11:25,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2018-10-01 01:11:25,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 138. [2018-10-01 01:11:25,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138 states. [2018-10-01 01:11:25,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 138 transitions. [2018-10-01 01:11:25,107 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 138 transitions. Word has length 135 [2018-10-01 01:11:25,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:11:25,108 INFO L480 AbstractCegarLoop]: Abstraction has 138 states and 138 transitions. [2018-10-01 01:11:25,108 INFO L481 AbstractCegarLoop]: Interpolant automaton has 136 states. [2018-10-01 01:11:25,108 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 138 transitions. [2018-10-01 01:11:25,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2018-10-01 01:11:25,108 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:11:25,108 INFO L375 BasicCegarLoop]: trace histogram [68, 67, 1, 1] [2018-10-01 01:11:25,108 INFO L423 AbstractCegarLoop]: === Iteration 68 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:11:25,109 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:11:25,109 INFO L82 PathProgramCache]: Analyzing trace with hash 323690662, now seen corresponding path program 67 times [2018-10-01 01:11:25,109 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:11:25,109 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:11:25,109 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:11:25,109 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:11:25,110 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:11:25,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:11:25,602 INFO L134 CoverageAnalysis]: Checked inductivity of 4556 backedges. 0 proven. 4556 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:11:25,603 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:11:25,603 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 68 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 68 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:11:25,611 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:11:25,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:11:25,649 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:11:26,660 INFO L134 CoverageAnalysis]: Checked inductivity of 4556 backedges. 0 proven. 4556 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:11:26,681 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:11:26,681 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [68, 68] total 136 [2018-10-01 01:11:26,681 INFO L459 AbstractCegarLoop]: Interpolant automaton has 138 states [2018-10-01 01:11:26,683 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 138 interpolants. [2018-10-01 01:11:26,683 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:11:26,683 INFO L87 Difference]: Start difference. First operand 138 states and 138 transitions. Second operand 138 states. [2018-10-01 01:11:27,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:11:27,719 INFO L93 Difference]: Finished difference Result 141 states and 141 transitions. [2018-10-01 01:11:27,719 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2018-10-01 01:11:27,719 INFO L78 Accepts]: Start accepts. Automaton has 138 states. Word has length 137 [2018-10-01 01:11:27,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:11:27,720 INFO L225 Difference]: With dead ends: 141 [2018-10-01 01:11:27,720 INFO L226 Difference]: Without dead ends: 140 [2018-10-01 01:11:27,720 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 136 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s Time [2018-10-01 01:11:27,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2018-10-01 01:11:27,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 140. [2018-10-01 01:11:27,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2018-10-01 01:11:27,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 140 transitions. [2018-10-01 01:11:27,725 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 140 transitions. Word has length 137 [2018-10-01 01:11:27,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:11:27,725 INFO L480 AbstractCegarLoop]: Abstraction has 140 states and 140 transitions. [2018-10-01 01:11:27,725 INFO L481 AbstractCegarLoop]: Interpolant automaton has 138 states. [2018-10-01 01:11:27,725 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 140 transitions. [2018-10-01 01:11:27,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2018-10-01 01:11:27,726 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:11:27,726 INFO L375 BasicCegarLoop]: trace histogram [69, 68, 1, 1] [2018-10-01 01:11:27,726 INFO L423 AbstractCegarLoop]: === Iteration 69 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:11:27,726 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:11:27,726 INFO L82 PathProgramCache]: Analyzing trace with hash 1829081960, now seen corresponding path program 68 times [2018-10-01 01:11:27,727 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:11:27,727 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:11:27,727 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:11:27,727 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:11:27,727 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:11:27,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:11:28,238 INFO L134 CoverageAnalysis]: Checked inductivity of 4692 backedges. 0 proven. 4692 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:11:28,239 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:11:28,239 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 69 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 69 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:11:28,246 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 01:11:28,285 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 01:11:28,285 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:11:28,287 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:11:29,459 INFO L134 CoverageAnalysis]: Checked inductivity of 4692 backedges. 0 proven. 4692 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:11:29,481 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:11:29,481 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [69, 69] total 138 [2018-10-01 01:11:29,482 INFO L459 AbstractCegarLoop]: Interpolant automaton has 140 states [2018-10-01 01:11:29,484 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 140 interpolants. [2018-10-01 01:11:29,484 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:11:29,484 INFO L87 Difference]: Start difference. First operand 140 states and 140 transitions. Second operand 140 states. [2018-10-01 01:11:30,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:11:30,468 INFO L93 Difference]: Finished difference Result 143 states and 143 transitions. [2018-10-01 01:11:30,469 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2018-10-01 01:11:30,469 INFO L78 Accepts]: Start accepts. Automaton has 140 states. Word has length 139 [2018-10-01 01:11:30,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:11:30,469 INFO L225 Difference]: With dead ends: 143 [2018-10-01 01:11:30,469 INFO L226 Difference]: Without dead ends: 142 [2018-10-01 01:11:30,470 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 138 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5s Time [2018-10-01 01:11:30,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2018-10-01 01:11:30,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 142. [2018-10-01 01:11:30,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2018-10-01 01:11:30,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 142 transitions. [2018-10-01 01:11:30,473 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 142 transitions. Word has length 139 [2018-10-01 01:11:30,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:11:30,473 INFO L480 AbstractCegarLoop]: Abstraction has 142 states and 142 transitions. [2018-10-01 01:11:30,473 INFO L481 AbstractCegarLoop]: Interpolant automaton has 140 states. [2018-10-01 01:11:30,473 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 142 transitions. [2018-10-01 01:11:30,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2018-10-01 01:11:30,474 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:11:30,474 INFO L375 BasicCegarLoop]: trace histogram [70, 69, 1, 1] [2018-10-01 01:11:30,474 INFO L423 AbstractCegarLoop]: === Iteration 70 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:11:30,475 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:11:30,475 INFO L82 PathProgramCache]: Analyzing trace with hash 1106140586, now seen corresponding path program 69 times [2018-10-01 01:11:30,475 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:11:30,475 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:11:30,475 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:11:30,475 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:11:30,476 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:11:30,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:11:30,915 INFO L134 CoverageAnalysis]: Checked inductivity of 4830 backedges. 0 proven. 4830 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:11:30,916 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:11:30,916 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 70 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 70 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:11:30,924 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 01:11:31,002 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 70 check-sat command(s) [2018-10-01 01:11:31,002 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:11:31,005 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:11:31,999 INFO L134 CoverageAnalysis]: Checked inductivity of 4830 backedges. 0 proven. 4830 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:11:32,019 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:11:32,019 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [70, 70] total 140 [2018-10-01 01:11:32,020 INFO L459 AbstractCegarLoop]: Interpolant automaton has 142 states [2018-10-01 01:11:32,021 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 142 interpolants. [2018-10-01 01:11:32,021 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:11:32,022 INFO L87 Difference]: Start difference. First operand 142 states and 142 transitions. Second operand 142 states. [2018-10-01 01:11:33,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:11:33,174 INFO L93 Difference]: Finished difference Result 145 states and 145 transitions. [2018-10-01 01:11:33,174 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2018-10-01 01:11:33,174 INFO L78 Accepts]: Start accepts. Automaton has 142 states. Word has length 141 [2018-10-01 01:11:33,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:11:33,175 INFO L225 Difference]: With dead ends: 145 [2018-10-01 01:11:33,175 INFO L226 Difference]: Without dead ends: 144 [2018-10-01 01:11:33,176 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 140 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s Time [2018-10-01 01:11:33,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2018-10-01 01:11:33,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 144. [2018-10-01 01:11:33,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2018-10-01 01:11:33,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 144 transitions. [2018-10-01 01:11:33,179 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 144 transitions. Word has length 141 [2018-10-01 01:11:33,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:11:33,179 INFO L480 AbstractCegarLoop]: Abstraction has 144 states and 144 transitions. [2018-10-01 01:11:33,179 INFO L481 AbstractCegarLoop]: Interpolant automaton has 142 states. [2018-10-01 01:11:33,179 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 144 transitions. [2018-10-01 01:11:33,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2018-10-01 01:11:33,180 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:11:33,180 INFO L375 BasicCegarLoop]: trace histogram [71, 70, 1, 1] [2018-10-01 01:11:33,180 INFO L423 AbstractCegarLoop]: === Iteration 71 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:11:33,180 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:11:33,181 INFO L82 PathProgramCache]: Analyzing trace with hash 2144182124, now seen corresponding path program 70 times [2018-10-01 01:11:33,181 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:11:33,181 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:11:33,181 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:11:33,181 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:11:33,182 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:11:33,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:11:33,898 INFO L134 CoverageAnalysis]: Checked inductivity of 4970 backedges. 0 proven. 4970 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:11:33,899 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:11:33,899 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 71 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 71 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:11:33,906 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 01:11:33,943 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 01:11:33,944 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:11:33,947 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:11:35,242 INFO L134 CoverageAnalysis]: Checked inductivity of 4970 backedges. 0 proven. 4970 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:11:35,262 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:11:35,262 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [71, 71] total 142 [2018-10-01 01:11:35,262 INFO L459 AbstractCegarLoop]: Interpolant automaton has 144 states [2018-10-01 01:11:35,264 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 144 interpolants. [2018-10-01 01:11:35,264 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:11:35,264 INFO L87 Difference]: Start difference. First operand 144 states and 144 transitions. Second operand 144 states. [2018-10-01 01:11:36,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:11:36,266 INFO L93 Difference]: Finished difference Result 147 states and 147 transitions. [2018-10-01 01:11:36,266 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2018-10-01 01:11:36,267 INFO L78 Accepts]: Start accepts. Automaton has 144 states. Word has length 143 [2018-10-01 01:11:36,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:11:36,267 INFO L225 Difference]: With dead ends: 147 [2018-10-01 01:11:36,268 INFO L226 Difference]: Without dead ends: 146 [2018-10-01 01:11:36,268 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 213 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 142 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8s Time [2018-10-01 01:11:36,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2018-10-01 01:11:36,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 146. [2018-10-01 01:11:36,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2018-10-01 01:11:36,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 146 transitions. [2018-10-01 01:11:36,272 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 146 transitions. Word has length 143 [2018-10-01 01:11:36,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:11:36,272 INFO L480 AbstractCegarLoop]: Abstraction has 146 states and 146 transitions. [2018-10-01 01:11:36,272 INFO L481 AbstractCegarLoop]: Interpolant automaton has 144 states. [2018-10-01 01:11:36,272 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 146 transitions. [2018-10-01 01:11:36,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2018-10-01 01:11:36,273 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:11:36,273 INFO L375 BasicCegarLoop]: trace histogram [72, 71, 1, 1] [2018-10-01 01:11:36,273 INFO L423 AbstractCegarLoop]: === Iteration 72 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:11:36,273 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:11:36,273 INFO L82 PathProgramCache]: Analyzing trace with hash -1025279826, now seen corresponding path program 71 times [2018-10-01 01:11:36,273 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:11:36,274 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:11:36,274 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:11:36,274 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:11:36,274 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:11:36,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:11:36,767 INFO L134 CoverageAnalysis]: Checked inductivity of 5112 backedges. 0 proven. 5112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:11:36,768 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:11:36,768 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 72 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 72 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:11:36,774 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 01:11:36,979 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 72 check-sat command(s) [2018-10-01 01:11:36,980 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:11:36,985 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:11:38,302 INFO L134 CoverageAnalysis]: Checked inductivity of 5112 backedges. 0 proven. 5112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:11:38,322 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:11:38,322 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [72, 72] total 144 [2018-10-01 01:11:38,323 INFO L459 AbstractCegarLoop]: Interpolant automaton has 146 states [2018-10-01 01:11:38,325 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 146 interpolants. [2018-10-01 01:11:38,325 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:11:38,325 INFO L87 Difference]: Start difference. First operand 146 states and 146 transitions. Second operand 146 states. [2018-10-01 01:11:39,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:11:39,607 INFO L93 Difference]: Finished difference Result 149 states and 149 transitions. [2018-10-01 01:11:39,607 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2018-10-01 01:11:39,607 INFO L78 Accepts]: Start accepts. Automaton has 146 states. Word has length 145 [2018-10-01 01:11:39,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:11:39,608 INFO L225 Difference]: With dead ends: 149 [2018-10-01 01:11:39,608 INFO L226 Difference]: Without dead ends: 148 [2018-10-01 01:11:39,609 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 144 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6s Time [2018-10-01 01:11:39,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2018-10-01 01:11:39,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 148. [2018-10-01 01:11:39,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 148 states. [2018-10-01 01:11:39,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 148 transitions. [2018-10-01 01:11:39,613 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 148 transitions. Word has length 145 [2018-10-01 01:11:39,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:11:39,614 INFO L480 AbstractCegarLoop]: Abstraction has 148 states and 148 transitions. [2018-10-01 01:11:39,614 INFO L481 AbstractCegarLoop]: Interpolant automaton has 146 states. [2018-10-01 01:11:39,614 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 148 transitions. [2018-10-01 01:11:39,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2018-10-01 01:11:39,615 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:11:39,615 INFO L375 BasicCegarLoop]: trace histogram [73, 72, 1, 1] [2018-10-01 01:11:39,615 INFO L423 AbstractCegarLoop]: === Iteration 73 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:11:39,615 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:11:39,615 INFO L82 PathProgramCache]: Analyzing trace with hash -1746400912, now seen corresponding path program 72 times [2018-10-01 01:11:39,615 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:11:39,616 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:11:39,616 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:11:39,616 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:11:39,616 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:11:39,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:11:40,113 INFO L134 CoverageAnalysis]: Checked inductivity of 5256 backedges. 0 proven. 5256 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:11:40,113 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:11:40,113 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 73 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 73 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:11:40,120 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 01:11:40,204 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 73 check-sat command(s) [2018-10-01 01:11:40,205 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:11:40,207 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:11:41,296 INFO L134 CoverageAnalysis]: Checked inductivity of 5256 backedges. 0 proven. 5256 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:11:41,316 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:11:41,316 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [73, 73] total 146 [2018-10-01 01:11:41,316 INFO L459 AbstractCegarLoop]: Interpolant automaton has 148 states [2018-10-01 01:11:41,318 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 148 interpolants. [2018-10-01 01:11:41,318 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:11:41,318 INFO L87 Difference]: Start difference. First operand 148 states and 148 transitions. Second operand 148 states. [2018-10-01 01:11:42,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:11:42,306 INFO L93 Difference]: Finished difference Result 151 states and 151 transitions. [2018-10-01 01:11:42,306 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2018-10-01 01:11:42,306 INFO L78 Accepts]: Start accepts. Automaton has 148 states. Word has length 147 [2018-10-01 01:11:42,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:11:42,307 INFO L225 Difference]: With dead ends: 151 [2018-10-01 01:11:42,307 INFO L226 Difference]: Without dead ends: 150 [2018-10-01 01:11:42,307 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 219 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 146 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s Time [2018-10-01 01:11:42,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2018-10-01 01:11:42,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 150. [2018-10-01 01:11:42,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150 states. [2018-10-01 01:11:42,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 150 transitions. [2018-10-01 01:11:42,312 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 150 transitions. Word has length 147 [2018-10-01 01:11:42,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:11:42,313 INFO L480 AbstractCegarLoop]: Abstraction has 150 states and 150 transitions. [2018-10-01 01:11:42,313 INFO L481 AbstractCegarLoop]: Interpolant automaton has 148 states. [2018-10-01 01:11:42,313 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 150 transitions. [2018-10-01 01:11:42,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2018-10-01 01:11:42,314 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:11:42,314 INFO L375 BasicCegarLoop]: trace histogram [74, 73, 1, 1] [2018-10-01 01:11:42,314 INFO L423 AbstractCegarLoop]: === Iteration 74 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:11:42,314 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:11:42,314 INFO L82 PathProgramCache]: Analyzing trace with hash 1040937394, now seen corresponding path program 73 times [2018-10-01 01:11:42,314 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:11:42,314 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:11:42,315 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:11:42,315 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:11:42,315 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:11:42,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:11:42,793 INFO L134 CoverageAnalysis]: Checked inductivity of 5402 backedges. 0 proven. 5402 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:11:42,793 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:11:42,793 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 74 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 74 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:11:42,801 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:11:42,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:11:42,840 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:11:44,061 INFO L134 CoverageAnalysis]: Checked inductivity of 5402 backedges. 0 proven. 5402 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:11:44,082 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:11:44,082 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [74, 74] total 148 [2018-10-01 01:11:44,082 INFO L459 AbstractCegarLoop]: Interpolant automaton has 150 states [2018-10-01 01:11:44,084 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 150 interpolants. [2018-10-01 01:11:44,084 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:11:44,084 INFO L87 Difference]: Start difference. First operand 150 states and 150 transitions. Second operand 150 states. [2018-10-01 01:11:45,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:11:45,325 INFO L93 Difference]: Finished difference Result 153 states and 153 transitions. [2018-10-01 01:11:45,325 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2018-10-01 01:11:45,325 INFO L78 Accepts]: Start accepts. Automaton has 150 states. Word has length 149 [2018-10-01 01:11:45,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:11:45,326 INFO L225 Difference]: With dead ends: 153 [2018-10-01 01:11:45,326 INFO L226 Difference]: Without dead ends: 152 [2018-10-01 01:11:45,326 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 148 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5s Time [2018-10-01 01:11:45,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2018-10-01 01:11:45,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 152. [2018-10-01 01:11:45,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 152 states. [2018-10-01 01:11:45,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 152 transitions. [2018-10-01 01:11:45,331 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 152 transitions. Word has length 149 [2018-10-01 01:11:45,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:11:45,331 INFO L480 AbstractCegarLoop]: Abstraction has 152 states and 152 transitions. [2018-10-01 01:11:45,331 INFO L481 AbstractCegarLoop]: Interpolant automaton has 150 states. [2018-10-01 01:11:45,331 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 152 transitions. [2018-10-01 01:11:45,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2018-10-01 01:11:45,332 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:11:45,332 INFO L375 BasicCegarLoop]: trace histogram [75, 74, 1, 1] [2018-10-01 01:11:45,332 INFO L423 AbstractCegarLoop]: === Iteration 75 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:11:45,332 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:11:45,333 INFO L82 PathProgramCache]: Analyzing trace with hash -386543244, now seen corresponding path program 74 times [2018-10-01 01:11:45,333 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:11:45,333 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:11:45,333 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:11:45,334 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:11:45,334 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:11:45,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:11:45,886 INFO L134 CoverageAnalysis]: Checked inductivity of 5550 backedges. 0 proven. 5550 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:11:45,886 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:11:45,886 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 75 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 75 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:11:45,894 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 01:11:45,930 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 01:11:45,931 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:11:45,934 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:11:47,115 INFO L134 CoverageAnalysis]: Checked inductivity of 5550 backedges. 0 proven. 5550 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:11:47,135 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:11:47,135 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [75, 75] total 150 [2018-10-01 01:11:47,135 INFO L459 AbstractCegarLoop]: Interpolant automaton has 152 states [2018-10-01 01:11:47,137 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 152 interpolants. [2018-10-01 01:11:47,138 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:11:47,138 INFO L87 Difference]: Start difference. First operand 152 states and 152 transitions. Second operand 152 states. [2018-10-01 01:11:48,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:11:48,259 INFO L93 Difference]: Finished difference Result 155 states and 155 transitions. [2018-10-01 01:11:48,259 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2018-10-01 01:11:48,259 INFO L78 Accepts]: Start accepts. Automaton has 152 states. Word has length 151 [2018-10-01 01:11:48,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:11:48,260 INFO L225 Difference]: With dead ends: 155 [2018-10-01 01:11:48,260 INFO L226 Difference]: Without dead ends: 154 [2018-10-01 01:11:48,261 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 225 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 150 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5s Time [2018-10-01 01:11:48,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2018-10-01 01:11:48,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 154. [2018-10-01 01:11:48,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 154 states. [2018-10-01 01:11:48,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 154 transitions. [2018-10-01 01:11:48,265 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 154 transitions. Word has length 151 [2018-10-01 01:11:48,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:11:48,265 INFO L480 AbstractCegarLoop]: Abstraction has 154 states and 154 transitions. [2018-10-01 01:11:48,265 INFO L481 AbstractCegarLoop]: Interpolant automaton has 152 states. [2018-10-01 01:11:48,265 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 154 transitions. [2018-10-01 01:11:48,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2018-10-01 01:11:48,266 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:11:48,266 INFO L375 BasicCegarLoop]: trace histogram [76, 75, 1, 1] [2018-10-01 01:11:48,266 INFO L423 AbstractCegarLoop]: === Iteration 76 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:11:48,266 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:11:48,266 INFO L82 PathProgramCache]: Analyzing trace with hash -2100868938, now seen corresponding path program 75 times [2018-10-01 01:11:48,266 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:11:48,266 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:11:48,267 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:11:48,267 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:11:48,267 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:11:48,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:11:48,777 INFO L134 CoverageAnalysis]: Checked inductivity of 5700 backedges. 0 proven. 5700 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:11:48,777 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:11:48,777 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 76 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 76 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:11:48,784 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 01:11:48,898 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 76 check-sat command(s) [2018-10-01 01:11:48,898 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:11:48,901 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:11:50,105 INFO L134 CoverageAnalysis]: Checked inductivity of 5700 backedges. 0 proven. 5700 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:11:50,125 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:11:50,125 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [76, 76] total 152 [2018-10-01 01:11:50,125 INFO L459 AbstractCegarLoop]: Interpolant automaton has 154 states [2018-10-01 01:11:50,127 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 154 interpolants. [2018-10-01 01:11:50,127 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:11:50,127 INFO L87 Difference]: Start difference. First operand 154 states and 154 transitions. Second operand 154 states. [2018-10-01 01:11:51,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:11:51,161 INFO L93 Difference]: Finished difference Result 157 states and 157 transitions. [2018-10-01 01:11:51,162 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2018-10-01 01:11:51,162 INFO L78 Accepts]: Start accepts. Automaton has 154 states. Word has length 153 [2018-10-01 01:11:51,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:11:51,163 INFO L225 Difference]: With dead ends: 157 [2018-10-01 01:11:51,163 INFO L226 Difference]: Without dead ends: 156 [2018-10-01 01:11:51,163 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 152 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5s Time [2018-10-01 01:11:51,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2018-10-01 01:11:51,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 156. [2018-10-01 01:11:51,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 156 states. [2018-10-01 01:11:51,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 156 transitions. [2018-10-01 01:11:51,166 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 156 transitions. Word has length 153 [2018-10-01 01:11:51,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:11:51,167 INFO L480 AbstractCegarLoop]: Abstraction has 156 states and 156 transitions. [2018-10-01 01:11:51,167 INFO L481 AbstractCegarLoop]: Interpolant automaton has 154 states. [2018-10-01 01:11:51,167 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 156 transitions. [2018-10-01 01:11:51,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2018-10-01 01:11:51,167 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:11:51,167 INFO L375 BasicCegarLoop]: trace histogram [77, 76, 1, 1] [2018-10-01 01:11:51,168 INFO L423 AbstractCegarLoop]: === Iteration 77 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:11:51,168 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:11:51,168 INFO L82 PathProgramCache]: Analyzing trace with hash -300419208, now seen corresponding path program 76 times [2018-10-01 01:11:51,168 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:11:51,168 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:11:51,168 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:11:51,169 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:11:51,169 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:11:51,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:11:51,653 INFO L134 CoverageAnalysis]: Checked inductivity of 5852 backedges. 0 proven. 5852 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:11:51,653 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:11:51,653 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 77 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 77 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:11:51,661 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 01:11:51,703 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 01:11:51,704 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:11:51,708 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:11:52,849 INFO L134 CoverageAnalysis]: Checked inductivity of 5852 backedges. 0 proven. 5852 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:11:52,869 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:11:52,869 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [77, 77] total 154 [2018-10-01 01:11:52,869 INFO L459 AbstractCegarLoop]: Interpolant automaton has 156 states [2018-10-01 01:11:52,871 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 156 interpolants. [2018-10-01 01:11:52,871 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:11:52,871 INFO L87 Difference]: Start difference. First operand 156 states and 156 transitions. Second operand 156 states. [2018-10-01 01:11:54,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:11:54,110 INFO L93 Difference]: Finished difference Result 159 states and 159 transitions. [2018-10-01 01:11:54,110 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2018-10-01 01:11:54,110 INFO L78 Accepts]: Start accepts. Automaton has 156 states. Word has length 155 [2018-10-01 01:11:54,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:11:54,111 INFO L225 Difference]: With dead ends: 159 [2018-10-01 01:11:54,111 INFO L226 Difference]: Without dead ends: 158 [2018-10-01 01:11:54,111 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 231 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 154 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s Time [2018-10-01 01:11:54,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2018-10-01 01:11:54,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 158. [2018-10-01 01:11:54,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 158 states. [2018-10-01 01:11:54,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 158 transitions. [2018-10-01 01:11:54,115 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 158 transitions. Word has length 155 [2018-10-01 01:11:54,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:11:54,115 INFO L480 AbstractCegarLoop]: Abstraction has 158 states and 158 transitions. [2018-10-01 01:11:54,115 INFO L481 AbstractCegarLoop]: Interpolant automaton has 156 states. [2018-10-01 01:11:54,115 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 158 transitions. [2018-10-01 01:11:54,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2018-10-01 01:11:54,116 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:11:54,116 INFO L375 BasicCegarLoop]: trace histogram [78, 77, 1, 1] [2018-10-01 01:11:54,116 INFO L423 AbstractCegarLoop]: === Iteration 78 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:11:54,116 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:11:54,116 INFO L82 PathProgramCache]: Analyzing trace with hash -940048966, now seen corresponding path program 77 times [2018-10-01 01:11:54,117 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:11:54,117 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:11:54,117 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:11:54,117 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:11:54,117 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:11:54,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:11:54,658 INFO L134 CoverageAnalysis]: Checked inductivity of 6006 backedges. 0 proven. 6006 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:11:54,659 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:11:54,659 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 78 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 78 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:11:54,666 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 01:11:54,761 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 78 check-sat command(s) [2018-10-01 01:11:54,762 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:11:54,766 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:11:55,893 INFO L134 CoverageAnalysis]: Checked inductivity of 6006 backedges. 0 proven. 6006 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:11:55,914 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:11:55,914 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [78, 78] total 156 [2018-10-01 01:11:55,915 INFO L459 AbstractCegarLoop]: Interpolant automaton has 158 states [2018-10-01 01:11:55,916 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 158 interpolants. [2018-10-01 01:11:55,916 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:11:55,917 INFO L87 Difference]: Start difference. First operand 158 states and 158 transitions. Second operand 158 states. [2018-10-01 01:11:57,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:11:57,298 INFO L93 Difference]: Finished difference Result 161 states and 161 transitions. [2018-10-01 01:11:57,299 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2018-10-01 01:11:57,299 INFO L78 Accepts]: Start accepts. Automaton has 158 states. Word has length 157 [2018-10-01 01:11:57,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:11:57,300 INFO L225 Difference]: With dead ends: 161 [2018-10-01 01:11:57,300 INFO L226 Difference]: Without dead ends: 160 [2018-10-01 01:11:57,300 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 234 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 156 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5s Time [2018-10-01 01:11:57,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2018-10-01 01:11:57,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 160. [2018-10-01 01:11:57,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 160 states. [2018-10-01 01:11:57,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 160 transitions. [2018-10-01 01:11:57,305 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 160 transitions. Word has length 157 [2018-10-01 01:11:57,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:11:57,306 INFO L480 AbstractCegarLoop]: Abstraction has 160 states and 160 transitions. [2018-10-01 01:11:57,306 INFO L481 AbstractCegarLoop]: Interpolant automaton has 158 states. [2018-10-01 01:11:57,306 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 160 transitions. [2018-10-01 01:11:57,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2018-10-01 01:11:57,307 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:11:57,307 INFO L375 BasicCegarLoop]: trace histogram [79, 78, 1, 1] [2018-10-01 01:11:57,307 INFO L423 AbstractCegarLoop]: === Iteration 79 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:11:57,307 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:11:57,307 INFO L82 PathProgramCache]: Analyzing trace with hash -1443923076, now seen corresponding path program 78 times [2018-10-01 01:11:57,307 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:11:57,308 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:11:57,308 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:11:57,308 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:11:57,308 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:11:57,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:11:57,823 INFO L134 CoverageAnalysis]: Checked inductivity of 6162 backedges. 0 proven. 6162 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:11:57,824 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:11:57,824 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 79 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 79 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:11:57,831 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 01:11:57,920 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 79 check-sat command(s) [2018-10-01 01:11:57,920 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:11:57,923 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:11:59,223 INFO L134 CoverageAnalysis]: Checked inductivity of 6162 backedges. 0 proven. 6162 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:11:59,243 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:11:59,243 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [79, 79] total 158 [2018-10-01 01:11:59,244 INFO L459 AbstractCegarLoop]: Interpolant automaton has 160 states [2018-10-01 01:11:59,245 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 160 interpolants. [2018-10-01 01:11:59,245 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:11:59,246 INFO L87 Difference]: Start difference. First operand 160 states and 160 transitions. Second operand 160 states. [2018-10-01 01:12:00,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:12:00,603 INFO L93 Difference]: Finished difference Result 163 states and 163 transitions. [2018-10-01 01:12:00,603 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2018-10-01 01:12:00,604 INFO L78 Accepts]: Start accepts. Automaton has 160 states. Word has length 159 [2018-10-01 01:12:00,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:12:00,604 INFO L225 Difference]: With dead ends: 163 [2018-10-01 01:12:00,604 INFO L226 Difference]: Without dead ends: 162 [2018-10-01 01:12:00,605 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 237 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 158 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6s Time [2018-10-01 01:12:00,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2018-10-01 01:12:00,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 162. [2018-10-01 01:12:00,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 162 states. [2018-10-01 01:12:00,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 162 transitions. [2018-10-01 01:12:00,610 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 162 transitions. Word has length 159 [2018-10-01 01:12:00,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:12:00,610 INFO L480 AbstractCegarLoop]: Abstraction has 162 states and 162 transitions. [2018-10-01 01:12:00,610 INFO L481 AbstractCegarLoop]: Interpolant automaton has 160 states. [2018-10-01 01:12:00,610 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 162 transitions. [2018-10-01 01:12:00,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2018-10-01 01:12:00,611 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:12:00,611 INFO L375 BasicCegarLoop]: trace histogram [80, 79, 1, 1] [2018-10-01 01:12:00,611 INFO L423 AbstractCegarLoop]: === Iteration 80 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:12:00,611 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:12:00,612 INFO L82 PathProgramCache]: Analyzing trace with hash -335638338, now seen corresponding path program 79 times [2018-10-01 01:12:00,612 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:12:00,612 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:12:00,612 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:12:00,612 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:12:00,613 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:12:00,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:12:01,121 INFO L134 CoverageAnalysis]: Checked inductivity of 6320 backedges. 0 proven. 6320 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:12:01,121 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:12:01,121 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 80 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 80 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:12:01,127 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:12:01,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:12:01,169 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:12:02,354 INFO L134 CoverageAnalysis]: Checked inductivity of 6320 backedges. 0 proven. 6320 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:12:02,374 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:12:02,374 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [80, 80] total 160 [2018-10-01 01:12:02,375 INFO L459 AbstractCegarLoop]: Interpolant automaton has 162 states [2018-10-01 01:12:02,376 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 162 interpolants. [2018-10-01 01:12:02,376 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:12:02,377 INFO L87 Difference]: Start difference. First operand 162 states and 162 transitions. Second operand 162 states. [2018-10-01 01:12:03,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:12:03,774 INFO L93 Difference]: Finished difference Result 165 states and 165 transitions. [2018-10-01 01:12:03,774 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2018-10-01 01:12:03,774 INFO L78 Accepts]: Start accepts. Automaton has 162 states. Word has length 161 [2018-10-01 01:12:03,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:12:03,775 INFO L225 Difference]: With dead ends: 165 [2018-10-01 01:12:03,775 INFO L226 Difference]: Without dead ends: 164 [2018-10-01 01:12:03,775 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 240 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 160 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5s Time [2018-10-01 01:12:03,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2018-10-01 01:12:03,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 164. [2018-10-01 01:12:03,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 164 states. [2018-10-01 01:12:03,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 164 transitions. [2018-10-01 01:12:03,780 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 164 transitions. Word has length 161 [2018-10-01 01:12:03,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:12:03,781 INFO L480 AbstractCegarLoop]: Abstraction has 164 states and 164 transitions. [2018-10-01 01:12:03,781 INFO L481 AbstractCegarLoop]: Interpolant automaton has 162 states. [2018-10-01 01:12:03,781 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 164 transitions. [2018-10-01 01:12:03,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2018-10-01 01:12:03,782 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:12:03,782 INFO L375 BasicCegarLoop]: trace histogram [81, 80, 1, 1] [2018-10-01 01:12:03,782 INFO L423 AbstractCegarLoop]: === Iteration 81 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:12:03,782 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:12:03,782 INFO L82 PathProgramCache]: Analyzing trace with hash -425894528, now seen corresponding path program 80 times [2018-10-01 01:12:03,783 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:12:03,783 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:12:03,783 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:12:03,783 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:12:03,783 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:12:03,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:12:04,483 INFO L134 CoverageAnalysis]: Checked inductivity of 6480 backedges. 0 proven. 6480 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:12:04,483 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:12:04,483 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 81 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 81 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:12:04,491 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 01:12:04,532 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 01:12:04,533 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:12:04,536 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:12:05,717 INFO L134 CoverageAnalysis]: Checked inductivity of 6480 backedges. 0 proven. 6480 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:12:05,737 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:12:05,738 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [81, 81] total 162 [2018-10-01 01:12:05,738 INFO L459 AbstractCegarLoop]: Interpolant automaton has 164 states [2018-10-01 01:12:05,740 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 164 interpolants. [2018-10-01 01:12:05,740 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:12:05,740 INFO L87 Difference]: Start difference. First operand 164 states and 164 transitions. Second operand 164 states. [2018-10-01 01:12:07,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:12:07,153 INFO L93 Difference]: Finished difference Result 167 states and 167 transitions. [2018-10-01 01:12:07,153 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2018-10-01 01:12:07,153 INFO L78 Accepts]: Start accepts. Automaton has 164 states. Word has length 163 [2018-10-01 01:12:07,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:12:07,154 INFO L225 Difference]: With dead ends: 167 [2018-10-01 01:12:07,154 INFO L226 Difference]: Without dead ends: 166 [2018-10-01 01:12:07,154 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 243 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 162 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.7s Time [2018-10-01 01:12:07,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2018-10-01 01:12:07,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 166. [2018-10-01 01:12:07,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 166 states. [2018-10-01 01:12:07,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 166 transitions. [2018-10-01 01:12:07,158 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 166 transitions. Word has length 163 [2018-10-01 01:12:07,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:12:07,158 INFO L480 AbstractCegarLoop]: Abstraction has 166 states and 166 transitions. [2018-10-01 01:12:07,158 INFO L481 AbstractCegarLoop]: Interpolant automaton has 164 states. [2018-10-01 01:12:07,158 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 166 transitions. [2018-10-01 01:12:07,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2018-10-01 01:12:07,159 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:12:07,159 INFO L375 BasicCegarLoop]: trace histogram [82, 81, 1, 1] [2018-10-01 01:12:07,159 INFO L423 AbstractCegarLoop]: === Iteration 82 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:12:07,159 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:12:07,159 INFO L82 PathProgramCache]: Analyzing trace with hash -1262747198, now seen corresponding path program 81 times [2018-10-01 01:12:07,159 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:12:07,159 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:12:07,160 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:12:07,160 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:12:07,160 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:12:07,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:12:07,821 INFO L134 CoverageAnalysis]: Checked inductivity of 6642 backedges. 0 proven. 6642 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:12:07,821 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:12:07,821 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 82 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 82 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:12:07,829 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 01:12:07,926 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 82 check-sat command(s) [2018-10-01 01:12:07,927 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:12:07,930 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:12:09,153 INFO L134 CoverageAnalysis]: Checked inductivity of 6642 backedges. 0 proven. 6642 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:12:09,173 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:12:09,173 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [82, 82] total 164 [2018-10-01 01:12:09,173 INFO L459 AbstractCegarLoop]: Interpolant automaton has 166 states [2018-10-01 01:12:09,175 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 166 interpolants. [2018-10-01 01:12:09,175 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:12:09,176 INFO L87 Difference]: Start difference. First operand 166 states and 166 transitions. Second operand 166 states. [2018-10-01 01:12:10,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:12:10,593 INFO L93 Difference]: Finished difference Result 169 states and 169 transitions. [2018-10-01 01:12:10,593 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2018-10-01 01:12:10,593 INFO L78 Accepts]: Start accepts. Automaton has 166 states. Word has length 165 [2018-10-01 01:12:10,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:12:10,594 INFO L225 Difference]: With dead ends: 169 [2018-10-01 01:12:10,594 INFO L226 Difference]: Without dead ends: 168 [2018-10-01 01:12:10,594 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 246 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 164 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.7s Time [2018-10-01 01:12:10,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2018-10-01 01:12:10,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 168. [2018-10-01 01:12:10,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 168 states. [2018-10-01 01:12:10,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 168 transitions. [2018-10-01 01:12:10,598 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 168 transitions. Word has length 165 [2018-10-01 01:12:10,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:12:10,598 INFO L480 AbstractCegarLoop]: Abstraction has 168 states and 168 transitions. [2018-10-01 01:12:10,598 INFO L481 AbstractCegarLoop]: Interpolant automaton has 166 states. [2018-10-01 01:12:10,598 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 168 transitions. [2018-10-01 01:12:10,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2018-10-01 01:12:10,599 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:12:10,599 INFO L375 BasicCegarLoop]: trace histogram [83, 82, 1, 1] [2018-10-01 01:12:10,599 INFO L423 AbstractCegarLoop]: === Iteration 83 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:12:10,599 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:12:10,599 INFO L82 PathProgramCache]: Analyzing trace with hash 1975688580, now seen corresponding path program 82 times [2018-10-01 01:12:10,599 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:12:10,599 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:12:10,600 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:12:10,600 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:12:10,600 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:12:10,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:12:11,130 INFO L134 CoverageAnalysis]: Checked inductivity of 6806 backedges. 0 proven. 6806 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:12:11,130 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:12:11,130 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 83 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 83 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:12:11,139 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 01:12:11,186 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 01:12:11,186 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:12:11,190 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:12:12,502 INFO L134 CoverageAnalysis]: Checked inductivity of 6806 backedges. 0 proven. 6806 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:12:12,523 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:12:12,523 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [83, 83] total 166 [2018-10-01 01:12:12,523 INFO L459 AbstractCegarLoop]: Interpolant automaton has 168 states [2018-10-01 01:12:12,525 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 168 interpolants. [2018-10-01 01:12:12,525 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:12:12,525 INFO L87 Difference]: Start difference. First operand 168 states and 168 transitions. Second operand 168 states. [2018-10-01 01:12:13,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:12:13,733 INFO L93 Difference]: Finished difference Result 171 states and 171 transitions. [2018-10-01 01:12:13,733 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2018-10-01 01:12:13,733 INFO L78 Accepts]: Start accepts. Automaton has 168 states. Word has length 167 [2018-10-01 01:12:13,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:12:13,734 INFO L225 Difference]: With dead ends: 171 [2018-10-01 01:12:13,734 INFO L226 Difference]: Without dead ends: 170 [2018-10-01 01:12:13,735 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 249 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 166 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6s Time [2018-10-01 01:12:13,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2018-10-01 01:12:13,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 170. [2018-10-01 01:12:13,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 170 states. [2018-10-01 01:12:13,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 170 transitions. [2018-10-01 01:12:13,738 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 170 transitions. Word has length 167 [2018-10-01 01:12:13,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:12:13,739 INFO L480 AbstractCegarLoop]: Abstraction has 170 states and 170 transitions. [2018-10-01 01:12:13,739 INFO L481 AbstractCegarLoop]: Interpolant automaton has 168 states. [2018-10-01 01:12:13,739 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 170 transitions. [2018-10-01 01:12:13,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2018-10-01 01:12:13,739 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:12:13,739 INFO L375 BasicCegarLoop]: trace histogram [84, 83, 1, 1] [2018-10-01 01:12:13,740 INFO L423 AbstractCegarLoop]: === Iteration 84 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:12:13,740 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:12:13,740 INFO L82 PathProgramCache]: Analyzing trace with hash 261181638, now seen corresponding path program 83 times [2018-10-01 01:12:13,740 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:12:13,740 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:12:13,740 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:12:13,740 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:12:13,741 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:12:13,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:12:14,273 INFO L134 CoverageAnalysis]: Checked inductivity of 6972 backedges. 0 proven. 6972 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:12:14,273 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:12:14,273 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 84 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 84 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:12:14,281 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 01:12:14,391 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 84 check-sat command(s) [2018-10-01 01:12:14,392 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:12:14,396 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:12:15,772 INFO L134 CoverageAnalysis]: Checked inductivity of 6972 backedges. 0 proven. 6972 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:12:15,793 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:12:15,794 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [84, 84] total 168 [2018-10-01 01:12:15,794 INFO L459 AbstractCegarLoop]: Interpolant automaton has 170 states [2018-10-01 01:12:15,796 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 170 interpolants. [2018-10-01 01:12:15,796 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:12:15,796 INFO L87 Difference]: Start difference. First operand 170 states and 170 transitions. Second operand 170 states. [2018-10-01 01:12:16,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:12:16,995 INFO L93 Difference]: Finished difference Result 173 states and 173 transitions. [2018-10-01 01:12:16,995 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2018-10-01 01:12:16,995 INFO L78 Accepts]: Start accepts. Automaton has 170 states. Word has length 169 [2018-10-01 01:12:16,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:12:16,996 INFO L225 Difference]: With dead ends: 173 [2018-10-01 01:12:16,996 INFO L226 Difference]: Without dead ends: 172 [2018-10-01 01:12:16,996 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 252 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 168 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.7s Time [2018-10-01 01:12:16,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2018-10-01 01:12:17,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 172. [2018-10-01 01:12:17,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 172 states. [2018-10-01 01:12:17,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 172 transitions. [2018-10-01 01:12:17,000 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 172 transitions. Word has length 169 [2018-10-01 01:12:17,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:12:17,000 INFO L480 AbstractCegarLoop]: Abstraction has 172 states and 172 transitions. [2018-10-01 01:12:17,001 INFO L481 AbstractCegarLoop]: Interpolant automaton has 170 states. [2018-10-01 01:12:17,001 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 172 transitions. [2018-10-01 01:12:17,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2018-10-01 01:12:17,001 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:12:17,002 INFO L375 BasicCegarLoop]: trace histogram [85, 84, 1, 1] [2018-10-01 01:12:17,002 INFO L423 AbstractCegarLoop]: === Iteration 85 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:12:17,002 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:12:17,002 INFO L82 PathProgramCache]: Analyzing trace with hash 1887452040, now seen corresponding path program 84 times [2018-10-01 01:12:17,002 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:12:17,002 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:12:17,003 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:12:17,003 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:12:17,003 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:12:17,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:12:17,655 INFO L134 CoverageAnalysis]: Checked inductivity of 7140 backedges. 0 proven. 7140 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:12:17,655 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:12:17,656 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 85 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 85 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:12:17,665 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 01:12:17,784 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 85 check-sat command(s) [2018-10-01 01:12:17,784 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:12:17,787 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:12:19,094 INFO L134 CoverageAnalysis]: Checked inductivity of 7140 backedges. 0 proven. 7140 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:12:19,114 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:12:19,114 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [85, 85] total 170 [2018-10-01 01:12:19,115 INFO L459 AbstractCegarLoop]: Interpolant automaton has 172 states [2018-10-01 01:12:19,117 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 172 interpolants. [2018-10-01 01:12:19,117 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:12:19,117 INFO L87 Difference]: Start difference. First operand 172 states and 172 transitions. Second operand 172 states. [2018-10-01 01:12:20,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:12:20,700 INFO L93 Difference]: Finished difference Result 175 states and 175 transitions. [2018-10-01 01:12:20,700 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2018-10-01 01:12:20,700 INFO L78 Accepts]: Start accepts. Automaton has 172 states. Word has length 171 [2018-10-01 01:12:20,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:12:20,701 INFO L225 Difference]: With dead ends: 175 [2018-10-01 01:12:20,701 INFO L226 Difference]: Without dead ends: 174 [2018-10-01 01:12:20,701 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 255 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 170 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.7s Time [2018-10-01 01:12:20,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2018-10-01 01:12:20,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 174. [2018-10-01 01:12:20,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 174 states. [2018-10-01 01:12:20,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 174 transitions. [2018-10-01 01:12:20,706 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 174 transitions. Word has length 171 [2018-10-01 01:12:20,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:12:20,706 INFO L480 AbstractCegarLoop]: Abstraction has 174 states and 174 transitions. [2018-10-01 01:12:20,706 INFO L481 AbstractCegarLoop]: Interpolant automaton has 172 states. [2018-10-01 01:12:20,706 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 174 transitions. [2018-10-01 01:12:20,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2018-10-01 01:12:20,707 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:12:20,707 INFO L375 BasicCegarLoop]: trace histogram [86, 85, 1, 1] [2018-10-01 01:12:20,707 INFO L423 AbstractCegarLoop]: === Iteration 86 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:12:20,707 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:12:20,708 INFO L82 PathProgramCache]: Analyzing trace with hash 1365212618, now seen corresponding path program 85 times [2018-10-01 01:12:20,708 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:12:20,708 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:12:20,708 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:12:20,708 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:12:20,709 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:12:20,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:12:21,267 INFO L134 CoverageAnalysis]: Checked inductivity of 7310 backedges. 0 proven. 7310 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:12:21,268 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:12:21,268 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 86 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 86 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:12:21,276 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:12:21,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:12:21,321 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:12:22,590 INFO L134 CoverageAnalysis]: Checked inductivity of 7310 backedges. 0 proven. 7310 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:12:22,610 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:12:22,611 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [86, 86] total 172 [2018-10-01 01:12:22,611 INFO L459 AbstractCegarLoop]: Interpolant automaton has 174 states [2018-10-01 01:12:22,614 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 174 interpolants. [2018-10-01 01:12:22,614 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:12:22,614 INFO L87 Difference]: Start difference. First operand 174 states and 174 transitions. Second operand 174 states. [2018-10-01 01:12:23,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:12:23,896 INFO L93 Difference]: Finished difference Result 177 states and 177 transitions. [2018-10-01 01:12:23,896 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2018-10-01 01:12:23,896 INFO L78 Accepts]: Start accepts. Automaton has 174 states. Word has length 173 [2018-10-01 01:12:23,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:12:23,897 INFO L225 Difference]: With dead ends: 177 [2018-10-01 01:12:23,897 INFO L226 Difference]: Without dead ends: 176 [2018-10-01 01:12:23,898 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 258 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 172 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6s Time [2018-10-01 01:12:23,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2018-10-01 01:12:23,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 176. [2018-10-01 01:12:23,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 176 states. [2018-10-01 01:12:23,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 176 transitions. [2018-10-01 01:12:23,903 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 176 transitions. Word has length 173 [2018-10-01 01:12:23,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:12:23,904 INFO L480 AbstractCegarLoop]: Abstraction has 176 states and 176 transitions. [2018-10-01 01:12:23,904 INFO L481 AbstractCegarLoop]: Interpolant automaton has 174 states. [2018-10-01 01:12:23,904 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 176 transitions. [2018-10-01 01:12:23,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2018-10-01 01:12:23,905 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:12:23,905 INFO L375 BasicCegarLoop]: trace histogram [87, 86, 1, 1] [2018-10-01 01:12:23,905 INFO L423 AbstractCegarLoop]: === Iteration 87 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:12:23,905 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:12:23,905 INFO L82 PathProgramCache]: Analyzing trace with hash 2004301708, now seen corresponding path program 86 times [2018-10-01 01:12:23,905 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:12:23,906 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:12:23,906 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:12:23,906 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:12:23,906 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:12:23,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:12:24,509 INFO L134 CoverageAnalysis]: Checked inductivity of 7482 backedges. 0 proven. 7482 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:12:24,509 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:12:24,510 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 87 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 87 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:12:24,516 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 01:12:24,559 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 01:12:24,559 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:12:24,562 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:12:26,094 INFO L134 CoverageAnalysis]: Checked inductivity of 7482 backedges. 0 proven. 7482 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:12:26,114 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:12:26,115 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [87, 87] total 174 [2018-10-01 01:12:26,115 INFO L459 AbstractCegarLoop]: Interpolant automaton has 176 states [2018-10-01 01:12:26,117 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 176 interpolants. [2018-10-01 01:12:26,117 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:12:26,117 INFO L87 Difference]: Start difference. First operand 176 states and 176 transitions. Second operand 176 states. [2018-10-01 01:12:27,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:12:27,451 INFO L93 Difference]: Finished difference Result 179 states and 179 transitions. [2018-10-01 01:12:27,452 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2018-10-01 01:12:27,452 INFO L78 Accepts]: Start accepts. Automaton has 176 states. Word has length 175 [2018-10-01 01:12:27,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:12:27,453 INFO L225 Difference]: With dead ends: 179 [2018-10-01 01:12:27,453 INFO L226 Difference]: Without dead ends: 178 [2018-10-01 01:12:27,453 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 261 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 174 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.9s Time [2018-10-01 01:12:27,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2018-10-01 01:12:27,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 178. [2018-10-01 01:12:27,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 178 states. [2018-10-01 01:12:27,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 178 transitions. [2018-10-01 01:12:27,457 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 178 transitions. Word has length 175 [2018-10-01 01:12:27,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:12:27,457 INFO L480 AbstractCegarLoop]: Abstraction has 178 states and 178 transitions. [2018-10-01 01:12:27,457 INFO L481 AbstractCegarLoop]: Interpolant automaton has 176 states. [2018-10-01 01:12:27,458 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 178 transitions. [2018-10-01 01:12:27,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2018-10-01 01:12:27,458 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:12:27,458 INFO L375 BasicCegarLoop]: trace histogram [88, 87, 1, 1] [2018-10-01 01:12:27,458 INFO L423 AbstractCegarLoop]: === Iteration 88 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:12:27,459 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:12:27,459 INFO L82 PathProgramCache]: Analyzing trace with hash 1988593870, now seen corresponding path program 87 times [2018-10-01 01:12:27,459 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:12:27,459 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:12:27,459 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:12:27,459 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:12:27,459 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:12:27,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:12:28,147 INFO L134 CoverageAnalysis]: Checked inductivity of 7656 backedges. 0 proven. 7656 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:12:28,147 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:12:28,147 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 88 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 88 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:12:28,155 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 01:12:28,302 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 88 check-sat command(s) [2018-10-01 01:12:28,303 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:12:28,306 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:12:29,658 INFO L134 CoverageAnalysis]: Checked inductivity of 7656 backedges. 0 proven. 7656 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:12:29,678 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:12:29,678 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [88, 88] total 176 [2018-10-01 01:12:29,679 INFO L459 AbstractCegarLoop]: Interpolant automaton has 178 states [2018-10-01 01:12:29,681 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 178 interpolants. [2018-10-01 01:12:29,681 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:12:29,681 INFO L87 Difference]: Start difference. First operand 178 states and 178 transitions. Second operand 178 states. [2018-10-01 01:12:31,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:12:31,177 INFO L93 Difference]: Finished difference Result 181 states and 181 transitions. [2018-10-01 01:12:31,177 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2018-10-01 01:12:31,177 INFO L78 Accepts]: Start accepts. Automaton has 178 states. Word has length 177 [2018-10-01 01:12:31,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:12:31,193 INFO L225 Difference]: With dead ends: 181 [2018-10-01 01:12:31,193 INFO L226 Difference]: Without dead ends: 180 [2018-10-01 01:12:31,193 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 264 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 176 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8s Time [2018-10-01 01:12:31,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2018-10-01 01:12:31,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 180. [2018-10-01 01:12:31,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 180 states. [2018-10-01 01:12:31,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 180 transitions. [2018-10-01 01:12:31,197 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 180 transitions. Word has length 177 [2018-10-01 01:12:31,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:12:31,197 INFO L480 AbstractCegarLoop]: Abstraction has 180 states and 180 transitions. [2018-10-01 01:12:31,197 INFO L481 AbstractCegarLoop]: Interpolant automaton has 178 states. [2018-10-01 01:12:31,198 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 180 transitions. [2018-10-01 01:12:31,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2018-10-01 01:12:31,198 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:12:31,198 INFO L375 BasicCegarLoop]: trace histogram [89, 88, 1, 1] [2018-10-01 01:12:31,198 INFO L423 AbstractCegarLoop]: === Iteration 89 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:12:31,199 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:12:31,199 INFO L82 PathProgramCache]: Analyzing trace with hash -221736560, now seen corresponding path program 88 times [2018-10-01 01:12:31,199 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:12:31,199 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:12:31,199 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:12:31,199 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:12:31,200 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:12:31,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:12:31,885 INFO L134 CoverageAnalysis]: Checked inductivity of 7832 backedges. 0 proven. 7832 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:12:31,886 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:12:31,886 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 89 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 89 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:12:31,892 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 01:12:31,941 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 01:12:31,941 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:12:31,945 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:12:33,290 INFO L134 CoverageAnalysis]: Checked inductivity of 7832 backedges. 0 proven. 7832 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:12:33,312 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:12:33,313 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [89, 89] total 178 [2018-10-01 01:12:33,313 INFO L459 AbstractCegarLoop]: Interpolant automaton has 180 states [2018-10-01 01:12:33,315 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 180 interpolants. [2018-10-01 01:12:33,315 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:12:33,315 INFO L87 Difference]: Start difference. First operand 180 states and 180 transitions. Second operand 180 states. [2018-10-01 01:12:34,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:12:34,729 INFO L93 Difference]: Finished difference Result 183 states and 183 transitions. [2018-10-01 01:12:34,729 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2018-10-01 01:12:34,729 INFO L78 Accepts]: Start accepts. Automaton has 180 states. Word has length 179 [2018-10-01 01:12:34,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:12:34,730 INFO L225 Difference]: With dead ends: 183 [2018-10-01 01:12:34,730 INFO L226 Difference]: Without dead ends: 182 [2018-10-01 01:12:34,730 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 267 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 178 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8s Time [2018-10-01 01:12:34,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2018-10-01 01:12:34,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 182. [2018-10-01 01:12:34,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 182 states. [2018-10-01 01:12:34,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 182 transitions. [2018-10-01 01:12:34,734 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 182 transitions. Word has length 179 [2018-10-01 01:12:34,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:12:34,734 INFO L480 AbstractCegarLoop]: Abstraction has 182 states and 182 transitions. [2018-10-01 01:12:34,734 INFO L481 AbstractCegarLoop]: Interpolant automaton has 180 states. [2018-10-01 01:12:34,734 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 182 transitions. [2018-10-01 01:12:34,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2018-10-01 01:12:34,735 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:12:34,735 INFO L375 BasicCegarLoop]: trace histogram [90, 89, 1, 1] [2018-10-01 01:12:34,735 INFO L423 AbstractCegarLoop]: === Iteration 90 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:12:34,735 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:12:34,735 INFO L82 PathProgramCache]: Analyzing trace with hash 1659531730, now seen corresponding path program 89 times [2018-10-01 01:12:34,735 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:12:34,736 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:12:34,736 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:12:34,736 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:12:34,736 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:12:34,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:12:35,508 INFO L134 CoverageAnalysis]: Checked inductivity of 8010 backedges. 0 proven. 8010 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:12:35,509 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:12:35,509 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 90 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 90 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:12:35,516 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 01:12:35,631 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 90 check-sat command(s) [2018-10-01 01:12:35,631 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:12:35,636 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:12:37,002 INFO L134 CoverageAnalysis]: Checked inductivity of 8010 backedges. 0 proven. 8010 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:12:37,022 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:12:37,022 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [90, 90] total 180 [2018-10-01 01:12:37,023 INFO L459 AbstractCegarLoop]: Interpolant automaton has 182 states [2018-10-01 01:12:37,025 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 182 interpolants. [2018-10-01 01:12:37,025 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:12:37,025 INFO L87 Difference]: Start difference. First operand 182 states and 182 transitions. Second operand 182 states. [2018-10-01 01:12:38,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:12:38,338 INFO L93 Difference]: Finished difference Result 185 states and 185 transitions. [2018-10-01 01:12:38,339 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2018-10-01 01:12:38,339 INFO L78 Accepts]: Start accepts. Automaton has 182 states. Word has length 181 [2018-10-01 01:12:38,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:12:38,340 INFO L225 Difference]: With dead ends: 185 [2018-10-01 01:12:38,340 INFO L226 Difference]: Without dead ends: 184 [2018-10-01 01:12:38,340 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 270 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 180 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.9s Time [2018-10-01 01:12:38,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2018-10-01 01:12:38,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 184. [2018-10-01 01:12:38,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 184 states. [2018-10-01 01:12:38,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 184 transitions. [2018-10-01 01:12:38,344 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 184 transitions. Word has length 181 [2018-10-01 01:12:38,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:12:38,344 INFO L480 AbstractCegarLoop]: Abstraction has 184 states and 184 transitions. [2018-10-01 01:12:38,344 INFO L481 AbstractCegarLoop]: Interpolant automaton has 182 states. [2018-10-01 01:12:38,344 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 184 transitions. [2018-10-01 01:12:38,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2018-10-01 01:12:38,345 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:12:38,345 INFO L375 BasicCegarLoop]: trace histogram [91, 90, 1, 1] [2018-10-01 01:12:38,345 INFO L423 AbstractCegarLoop]: === Iteration 91 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:12:38,345 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:12:38,345 INFO L82 PathProgramCache]: Analyzing trace with hash 1377126804, now seen corresponding path program 90 times [2018-10-01 01:12:38,345 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:12:38,345 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:12:38,346 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:12:38,346 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:12:38,346 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:12:38,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:12:38,963 INFO L134 CoverageAnalysis]: Checked inductivity of 8190 backedges. 0 proven. 8190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:12:38,963 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:12:38,963 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 91 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 91 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:12:38,971 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 01:12:39,081 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 91 check-sat command(s) [2018-10-01 01:12:39,081 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:12:39,084 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:12:40,620 INFO L134 CoverageAnalysis]: Checked inductivity of 8190 backedges. 0 proven. 8190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:12:40,640 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:12:40,640 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [91, 91] total 182 [2018-10-01 01:12:40,641 INFO L459 AbstractCegarLoop]: Interpolant automaton has 184 states [2018-10-01 01:12:40,643 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 184 interpolants. [2018-10-01 01:12:40,643 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:12:40,643 INFO L87 Difference]: Start difference. First operand 184 states and 184 transitions. Second operand 184 states. [2018-10-01 01:12:42,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:12:42,167 INFO L93 Difference]: Finished difference Result 187 states and 187 transitions. [2018-10-01 01:12:42,167 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2018-10-01 01:12:42,168 INFO L78 Accepts]: Start accepts. Automaton has 184 states. Word has length 183 [2018-10-01 01:12:42,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:12:42,168 INFO L225 Difference]: With dead ends: 187 [2018-10-01 01:12:42,168 INFO L226 Difference]: Without dead ends: 186 [2018-10-01 01:12:42,169 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 273 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 182 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.9s Time [2018-10-01 01:12:42,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2018-10-01 01:12:42,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 186. [2018-10-01 01:12:42,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 186 states. [2018-10-01 01:12:42,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 186 transitions. [2018-10-01 01:12:42,174 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 186 transitions. Word has length 183 [2018-10-01 01:12:42,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:12:42,174 INFO L480 AbstractCegarLoop]: Abstraction has 186 states and 186 transitions. [2018-10-01 01:12:42,174 INFO L481 AbstractCegarLoop]: Interpolant automaton has 184 states. [2018-10-01 01:12:42,175 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 186 transitions. [2018-10-01 01:12:42,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2018-10-01 01:12:42,175 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:12:42,176 INFO L375 BasicCegarLoop]: trace histogram [92, 91, 1, 1] [2018-10-01 01:12:42,176 INFO L423 AbstractCegarLoop]: === Iteration 92 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:12:42,176 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:12:42,176 INFO L82 PathProgramCache]: Analyzing trace with hash 568932566, now seen corresponding path program 91 times [2018-10-01 01:12:42,176 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:12:42,176 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:12:42,177 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:12:42,177 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:12:42,177 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:12:42,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:12:42,844 INFO L134 CoverageAnalysis]: Checked inductivity of 8372 backedges. 0 proven. 8372 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:12:42,844 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:12:42,844 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 92 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 92 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:12:42,868 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:12:42,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:12:42,917 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:12:44,329 INFO L134 CoverageAnalysis]: Checked inductivity of 8372 backedges. 0 proven. 8372 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:12:44,349 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:12:44,349 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [92, 92] total 184 [2018-10-01 01:12:44,349 INFO L459 AbstractCegarLoop]: Interpolant automaton has 186 states [2018-10-01 01:12:44,352 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 186 interpolants. [2018-10-01 01:12:44,352 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:12:44,352 INFO L87 Difference]: Start difference. First operand 186 states and 186 transitions. Second operand 186 states. [2018-10-01 01:12:45,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:12:45,862 INFO L93 Difference]: Finished difference Result 189 states and 189 transitions. [2018-10-01 01:12:45,862 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2018-10-01 01:12:45,862 INFO L78 Accepts]: Start accepts. Automaton has 186 states. Word has length 185 [2018-10-01 01:12:45,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:12:45,863 INFO L225 Difference]: With dead ends: 189 [2018-10-01 01:12:45,863 INFO L226 Difference]: Without dead ends: 188 [2018-10-01 01:12:45,863 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 276 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 184 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8s Time [2018-10-01 01:12:45,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2018-10-01 01:12:45,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 188. [2018-10-01 01:12:45,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 188 states. [2018-10-01 01:12:45,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 188 transitions. [2018-10-01 01:12:45,869 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 188 transitions. Word has length 185 [2018-10-01 01:12:45,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:12:45,869 INFO L480 AbstractCegarLoop]: Abstraction has 188 states and 188 transitions. [2018-10-01 01:12:45,869 INFO L481 AbstractCegarLoop]: Interpolant automaton has 186 states. [2018-10-01 01:12:45,869 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 188 transitions. [2018-10-01 01:12:45,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2018-10-01 01:12:45,870 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:12:45,870 INFO L375 BasicCegarLoop]: trace histogram [93, 92, 1, 1] [2018-10-01 01:12:45,870 INFO L423 AbstractCegarLoop]: === Iteration 93 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:12:45,871 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:12:45,871 INFO L82 PathProgramCache]: Analyzing trace with hash 1283350424, now seen corresponding path program 92 times [2018-10-01 01:12:45,871 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:12:45,871 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:12:45,871 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:12:45,872 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:12:45,872 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:12:45,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:12:46,523 INFO L134 CoverageAnalysis]: Checked inductivity of 8556 backedges. 0 proven. 8556 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:12:46,523 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:12:46,523 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 93 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 93 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:12:46,530 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 01:12:46,577 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 01:12:46,577 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:12:46,580 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:12:47,972 INFO L134 CoverageAnalysis]: Checked inductivity of 8556 backedges. 0 proven. 8556 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:12:47,992 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:12:47,992 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [93, 93] total 186 [2018-10-01 01:12:47,992 INFO L459 AbstractCegarLoop]: Interpolant automaton has 188 states [2018-10-01 01:12:47,995 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 188 interpolants. [2018-10-01 01:12:47,995 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:12:47,995 INFO L87 Difference]: Start difference. First operand 188 states and 188 transitions. Second operand 188 states. [2018-10-01 01:12:49,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:12:49,338 INFO L93 Difference]: Finished difference Result 191 states and 191 transitions. [2018-10-01 01:12:49,339 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2018-10-01 01:12:49,339 INFO L78 Accepts]: Start accepts. Automaton has 188 states. Word has length 187 [2018-10-01 01:12:49,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:12:49,340 INFO L225 Difference]: With dead ends: 191 [2018-10-01 01:12:49,340 INFO L226 Difference]: Without dead ends: 190 [2018-10-01 01:12:49,340 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 279 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 186 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8s Time [2018-10-01 01:12:49,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2018-10-01 01:12:49,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 190. [2018-10-01 01:12:49,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 190 states. [2018-10-01 01:12:49,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 190 transitions. [2018-10-01 01:12:49,347 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 190 transitions. Word has length 187 [2018-10-01 01:12:49,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:12:49,347 INFO L480 AbstractCegarLoop]: Abstraction has 190 states and 190 transitions. [2018-10-01 01:12:49,347 INFO L481 AbstractCegarLoop]: Interpolant automaton has 188 states. [2018-10-01 01:12:49,348 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 190 transitions. [2018-10-01 01:12:49,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2018-10-01 01:12:49,348 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:12:49,349 INFO L375 BasicCegarLoop]: trace histogram [94, 93, 1, 1] [2018-10-01 01:12:49,349 INFO L423 AbstractCegarLoop]: === Iteration 94 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:12:49,349 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:12:49,349 INFO L82 PathProgramCache]: Analyzing trace with hash 644144602, now seen corresponding path program 93 times [2018-10-01 01:12:49,349 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:12:49,349 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:12:49,350 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:12:49,350 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:12:49,350 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:12:49,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:12:50,032 INFO L134 CoverageAnalysis]: Checked inductivity of 8742 backedges. 0 proven. 8742 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:12:50,033 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:12:50,033 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 94 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 94 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:12:50,039 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 01:12:50,157 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 94 check-sat command(s) [2018-10-01 01:12:50,157 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:12:50,160 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:12:51,728 INFO L134 CoverageAnalysis]: Checked inductivity of 8742 backedges. 0 proven. 8742 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:12:51,749 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:12:51,749 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [94, 94] total 188 [2018-10-01 01:12:51,750 INFO L459 AbstractCegarLoop]: Interpolant automaton has 190 states [2018-10-01 01:12:51,752 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 190 interpolants. [2018-10-01 01:12:51,752 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:12:51,753 INFO L87 Difference]: Start difference. First operand 190 states and 190 transitions. Second operand 190 states. [2018-10-01 01:12:53,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:12:53,079 INFO L93 Difference]: Finished difference Result 193 states and 193 transitions. [2018-10-01 01:12:53,080 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2018-10-01 01:12:53,080 INFO L78 Accepts]: Start accepts. Automaton has 190 states. Word has length 189 [2018-10-01 01:12:53,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:12:53,081 INFO L225 Difference]: With dead ends: 193 [2018-10-01 01:12:53,081 INFO L226 Difference]: Without dead ends: 192 [2018-10-01 01:12:53,081 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 282 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 188 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.0s Time [2018-10-01 01:12:53,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2018-10-01 01:12:53,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 192. [2018-10-01 01:12:53,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 192 states. [2018-10-01 01:12:53,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 192 transitions. [2018-10-01 01:12:53,085 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 192 transitions. Word has length 189 [2018-10-01 01:12:53,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:12:53,085 INFO L480 AbstractCegarLoop]: Abstraction has 192 states and 192 transitions. [2018-10-01 01:12:53,085 INFO L481 AbstractCegarLoop]: Interpolant automaton has 190 states. [2018-10-01 01:12:53,085 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 192 transitions. [2018-10-01 01:12:53,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2018-10-01 01:12:53,086 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:12:53,086 INFO L375 BasicCegarLoop]: trace histogram [95, 94, 1, 1] [2018-10-01 01:12:53,086 INFO L423 AbstractCegarLoop]: === Iteration 95 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:12:53,086 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:12:53,086 INFO L82 PathProgramCache]: Analyzing trace with hash 547672988, now seen corresponding path program 94 times [2018-10-01 01:12:53,086 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:12:53,087 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:12:53,087 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:12:53,087 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:12:53,087 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:12:53,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:12:53,722 INFO L134 CoverageAnalysis]: Checked inductivity of 8930 backedges. 0 proven. 8930 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:12:53,723 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:12:53,723 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 95 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 95 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:12:53,731 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 01:12:53,784 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 01:12:53,784 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:12:53,787 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:12:55,340 INFO L134 CoverageAnalysis]: Checked inductivity of 8930 backedges. 0 proven. 8930 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:12:55,361 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:12:55,361 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [95, 95] total 190 [2018-10-01 01:12:55,362 INFO L459 AbstractCegarLoop]: Interpolant automaton has 192 states [2018-10-01 01:12:55,364 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 192 interpolants. [2018-10-01 01:12:55,364 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:12:55,364 INFO L87 Difference]: Start difference. First operand 192 states and 192 transitions. Second operand 192 states. [2018-10-01 01:12:56,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:12:56,887 INFO L93 Difference]: Finished difference Result 195 states and 195 transitions. [2018-10-01 01:12:56,887 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2018-10-01 01:12:56,887 INFO L78 Accepts]: Start accepts. Automaton has 192 states. Word has length 191 [2018-10-01 01:12:56,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:12:56,888 INFO L225 Difference]: With dead ends: 195 [2018-10-01 01:12:56,888 INFO L226 Difference]: Without dead ends: 194 [2018-10-01 01:12:56,888 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 285 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 190 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.9s Time [2018-10-01 01:12:56,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2018-10-01 01:12:56,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 194. [2018-10-01 01:12:56,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 194 states. [2018-10-01 01:12:56,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 194 transitions. [2018-10-01 01:12:56,892 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 194 transitions. Word has length 191 [2018-10-01 01:12:56,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:12:56,893 INFO L480 AbstractCegarLoop]: Abstraction has 194 states and 194 transitions. [2018-10-01 01:12:56,893 INFO L481 AbstractCegarLoop]: Interpolant automaton has 192 states. [2018-10-01 01:12:56,893 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 194 transitions. [2018-10-01 01:12:56,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2018-10-01 01:12:56,893 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:12:56,894 INFO L375 BasicCegarLoop]: trace histogram [96, 95, 1, 1] [2018-10-01 01:12:56,894 INFO L423 AbstractCegarLoop]: === Iteration 96 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:12:56,894 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:12:56,894 INFO L82 PathProgramCache]: Analyzing trace with hash -1967234850, now seen corresponding path program 95 times [2018-10-01 01:12:56,894 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:12:56,894 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:12:56,895 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:12:56,895 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:12:56,895 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:12:56,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:12:57,560 INFO L134 CoverageAnalysis]: Checked inductivity of 9120 backedges. 0 proven. 9120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:12:57,560 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:12:57,560 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 96 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 96 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:12:57,568 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 01:12:57,697 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 96 check-sat command(s) [2018-10-01 01:12:57,697 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:12:57,702 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:12:59,260 INFO L134 CoverageAnalysis]: Checked inductivity of 9120 backedges. 0 proven. 9120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:12:59,280 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:12:59,281 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [96, 96] total 192 [2018-10-01 01:12:59,281 INFO L459 AbstractCegarLoop]: Interpolant automaton has 194 states [2018-10-01 01:12:59,284 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 194 interpolants. [2018-10-01 01:12:59,284 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:12:59,284 INFO L87 Difference]: Start difference. First operand 194 states and 194 transitions. Second operand 194 states. [2018-10-01 01:13:00,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:13:00,867 INFO L93 Difference]: Finished difference Result 197 states and 197 transitions. [2018-10-01 01:13:00,867 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2018-10-01 01:13:00,867 INFO L78 Accepts]: Start accepts. Automaton has 194 states. Word has length 193 [2018-10-01 01:13:00,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:13:00,868 INFO L225 Difference]: With dead ends: 197 [2018-10-01 01:13:00,868 INFO L226 Difference]: Without dead ends: 196 [2018-10-01 01:13:00,868 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 288 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 192 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.0s Time [2018-10-01 01:13:00,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2018-10-01 01:13:00,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 196. [2018-10-01 01:13:00,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 196 states. [2018-10-01 01:13:00,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 196 transitions. [2018-10-01 01:13:00,872 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 196 transitions. Word has length 193 [2018-10-01 01:13:00,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:13:00,872 INFO L480 AbstractCegarLoop]: Abstraction has 196 states and 196 transitions. [2018-10-01 01:13:00,872 INFO L481 AbstractCegarLoop]: Interpolant automaton has 194 states. [2018-10-01 01:13:00,872 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 196 transitions. [2018-10-01 01:13:00,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2018-10-01 01:13:00,873 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:13:00,873 INFO L375 BasicCegarLoop]: trace histogram [97, 96, 1, 1] [2018-10-01 01:13:00,874 INFO L423 AbstractCegarLoop]: === Iteration 97 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:13:00,874 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:13:00,874 INFO L82 PathProgramCache]: Analyzing trace with hash -727079520, now seen corresponding path program 96 times [2018-10-01 01:13:00,874 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:13:00,874 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:13:00,874 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:13:00,875 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:13:00,875 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:13:00,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:13:01,521 INFO L134 CoverageAnalysis]: Checked inductivity of 9312 backedges. 0 proven. 9312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:13:01,522 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:13:01,522 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 97 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 97 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:13:01,529 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 01:13:01,647 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 97 check-sat command(s) [2018-10-01 01:13:01,647 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:13:01,650 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:13:03,195 INFO L134 CoverageAnalysis]: Checked inductivity of 9312 backedges. 0 proven. 9312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:13:03,215 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:13:03,216 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [97, 97] total 194 [2018-10-01 01:13:03,216 INFO L459 AbstractCegarLoop]: Interpolant automaton has 196 states [2018-10-01 01:13:03,218 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 196 interpolants. [2018-10-01 01:13:03,218 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:13:03,218 INFO L87 Difference]: Start difference. First operand 196 states and 196 transitions. Second operand 196 states. [2018-10-01 01:13:04,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:13:04,599 INFO L93 Difference]: Finished difference Result 199 states and 199 transitions. [2018-10-01 01:13:04,599 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2018-10-01 01:13:04,599 INFO L78 Accepts]: Start accepts. Automaton has 196 states. Word has length 195 [2018-10-01 01:13:04,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:13:04,600 INFO L225 Difference]: With dead ends: 199 [2018-10-01 01:13:04,600 INFO L226 Difference]: Without dead ends: 198 [2018-10-01 01:13:04,600 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 291 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 194 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.9s Time [2018-10-01 01:13:04,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2018-10-01 01:13:04,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 198. [2018-10-01 01:13:04,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 198 states. [2018-10-01 01:13:04,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 198 transitions. [2018-10-01 01:13:04,606 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 198 transitions. Word has length 195 [2018-10-01 01:13:04,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:13:04,606 INFO L480 AbstractCegarLoop]: Abstraction has 198 states and 198 transitions. [2018-10-01 01:13:04,606 INFO L481 AbstractCegarLoop]: Interpolant automaton has 196 states. [2018-10-01 01:13:04,606 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 198 transitions. [2018-10-01 01:13:04,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2018-10-01 01:13:04,607 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:13:04,607 INFO L375 BasicCegarLoop]: trace histogram [98, 97, 1, 1] [2018-10-01 01:13:04,608 INFO L423 AbstractCegarLoop]: === Iteration 98 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:13:04,608 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:13:04,608 INFO L82 PathProgramCache]: Analyzing trace with hash 1356251618, now seen corresponding path program 97 times [2018-10-01 01:13:04,608 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:13:04,608 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:13:04,609 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:13:04,609 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:13:04,609 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:13:04,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:13:05,291 INFO L134 CoverageAnalysis]: Checked inductivity of 9506 backedges. 0 proven. 9506 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:13:05,291 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:13:05,291 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 98 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 98 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:13:05,299 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:13:05,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:13:05,350 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:13:07,025 INFO L134 CoverageAnalysis]: Checked inductivity of 9506 backedges. 0 proven. 9506 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:13:07,045 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:13:07,045 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [98, 98] total 196 [2018-10-01 01:13:07,045 INFO L459 AbstractCegarLoop]: Interpolant automaton has 198 states [2018-10-01 01:13:07,048 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 198 interpolants. [2018-10-01 01:13:07,048 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:13:07,049 INFO L87 Difference]: Start difference. First operand 198 states and 198 transitions. Second operand 198 states. [2018-10-01 01:13:08,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:13:08,372 INFO L93 Difference]: Finished difference Result 201 states and 201 transitions. [2018-10-01 01:13:08,372 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2018-10-01 01:13:08,372 INFO L78 Accepts]: Start accepts. Automaton has 198 states. Word has length 197 [2018-10-01 01:13:08,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:13:08,373 INFO L225 Difference]: With dead ends: 201 [2018-10-01 01:13:08,373 INFO L226 Difference]: Without dead ends: 200 [2018-10-01 01:13:08,373 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 294 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 196 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1s Time [2018-10-01 01:13:08,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2018-10-01 01:13:08,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 200. [2018-10-01 01:13:08,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 200 states. [2018-10-01 01:13:08,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 200 transitions. [2018-10-01 01:13:08,377 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 200 transitions. Word has length 197 [2018-10-01 01:13:08,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:13:08,377 INFO L480 AbstractCegarLoop]: Abstraction has 200 states and 200 transitions. [2018-10-01 01:13:08,377 INFO L481 AbstractCegarLoop]: Interpolant automaton has 198 states. [2018-10-01 01:13:08,378 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 200 transitions. [2018-10-01 01:13:08,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2018-10-01 01:13:08,378 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:13:08,378 INFO L375 BasicCegarLoop]: trace histogram [99, 98, 1, 1] [2018-10-01 01:13:08,378 INFO L423 AbstractCegarLoop]: === Iteration 99 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:13:08,379 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:13:08,379 INFO L82 PathProgramCache]: Analyzing trace with hash 1982715300, now seen corresponding path program 98 times [2018-10-01 01:13:08,379 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:13:08,379 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:13:08,379 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:13:08,379 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:13:08,379 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:13:08,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:13:09,070 INFO L134 CoverageAnalysis]: Checked inductivity of 9702 backedges. 0 proven. 9702 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:13:09,070 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:13:09,070 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 99 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 99 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:13:09,078 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 01:13:09,128 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 01:13:09,129 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:13:09,132 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:13:10,709 INFO L134 CoverageAnalysis]: Checked inductivity of 9702 backedges. 0 proven. 9702 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:13:10,730 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:13:10,730 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [99, 99] total 198 [2018-10-01 01:13:10,731 INFO L459 AbstractCegarLoop]: Interpolant automaton has 200 states [2018-10-01 01:13:10,733 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 200 interpolants. [2018-10-01 01:13:10,733 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:13:10,734 INFO L87 Difference]: Start difference. First operand 200 states and 200 transitions. Second operand 200 states. [2018-10-01 01:13:12,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:13:12,242 INFO L93 Difference]: Finished difference Result 203 states and 203 transitions. [2018-10-01 01:13:12,242 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2018-10-01 01:13:12,243 INFO L78 Accepts]: Start accepts. Automaton has 200 states. Word has length 199 [2018-10-01 01:13:12,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:13:12,243 INFO L225 Difference]: With dead ends: 203 [2018-10-01 01:13:12,243 INFO L226 Difference]: Without dead ends: 202 [2018-10-01 01:13:12,244 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 297 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 198 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.0s Time [2018-10-01 01:13:12,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2018-10-01 01:13:12,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 202. [2018-10-01 01:13:12,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 202 states. [2018-10-01 01:13:12,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 202 transitions. [2018-10-01 01:13:12,248 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 202 transitions. Word has length 199 [2018-10-01 01:13:12,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:13:12,249 INFO L480 AbstractCegarLoop]: Abstraction has 202 states and 202 transitions. [2018-10-01 01:13:12,249 INFO L481 AbstractCegarLoop]: Interpolant automaton has 200 states. [2018-10-01 01:13:12,249 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 202 transitions. [2018-10-01 01:13:12,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2018-10-01 01:13:12,249 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:13:12,250 INFO L375 BasicCegarLoop]: trace histogram [100, 99, 1, 1] [2018-10-01 01:13:12,250 INFO L423 AbstractCegarLoop]: === Iteration 100 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:13:12,250 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:13:12,250 INFO L82 PathProgramCache]: Analyzing trace with hash -1576075034, now seen corresponding path program 99 times [2018-10-01 01:13:12,250 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:13:12,250 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:13:12,250 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:13:12,251 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:13:12,251 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:13:12,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:13:12,926 INFO L134 CoverageAnalysis]: Checked inductivity of 9900 backedges. 0 proven. 9900 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:13:12,926 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:13:12,926 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 100 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 100 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:13:12,933 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 01:13:13,075 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 100 check-sat command(s) [2018-10-01 01:13:13,075 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:13:13,078 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:13:14,716 INFO L134 CoverageAnalysis]: Checked inductivity of 9900 backedges. 0 proven. 9900 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:13:14,737 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:13:14,737 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [100, 100] total 200 [2018-10-01 01:13:14,737 INFO L459 AbstractCegarLoop]: Interpolant automaton has 202 states [2018-10-01 01:13:14,740 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 202 interpolants. [2018-10-01 01:13:14,740 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:13:14,740 INFO L87 Difference]: Start difference. First operand 202 states and 202 transitions. Second operand 202 states. [2018-10-01 01:13:16,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:13:16,338 INFO L93 Difference]: Finished difference Result 205 states and 205 transitions. [2018-10-01 01:13:16,339 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2018-10-01 01:13:16,339 INFO L78 Accepts]: Start accepts. Automaton has 202 states. Word has length 201 [2018-10-01 01:13:16,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:13:16,340 INFO L225 Difference]: With dead ends: 205 [2018-10-01 01:13:16,340 INFO L226 Difference]: Without dead ends: 204 [2018-10-01 01:13:16,340 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 300 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 200 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1s Time [2018-10-01 01:13:16,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2018-10-01 01:13:16,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 204. [2018-10-01 01:13:16,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 204 states. [2018-10-01 01:13:16,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 204 transitions. [2018-10-01 01:13:16,344 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 204 transitions. Word has length 201 [2018-10-01 01:13:16,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:13:16,344 INFO L480 AbstractCegarLoop]: Abstraction has 204 states and 204 transitions. [2018-10-01 01:13:16,344 INFO L481 AbstractCegarLoop]: Interpolant automaton has 202 states. [2018-10-01 01:13:16,344 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 204 transitions. [2018-10-01 01:13:16,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2018-10-01 01:13:16,345 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:13:16,345 INFO L375 BasicCegarLoop]: trace histogram [101, 100, 1, 1] [2018-10-01 01:13:16,346 INFO L423 AbstractCegarLoop]: === Iteration 101 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:13:16,346 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:13:16,346 INFO L82 PathProgramCache]: Analyzing trace with hash 1515348904, now seen corresponding path program 100 times [2018-10-01 01:13:16,346 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:13:16,346 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:13:16,347 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:13:16,347 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:13:16,347 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:13:16,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:13:17,064 INFO L134 CoverageAnalysis]: Checked inductivity of 10100 backedges. 0 proven. 10100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:13:17,064 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:13:17,064 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 101 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 101 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:13:17,072 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 01:13:17,131 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 01:13:17,131 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:13:17,135 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:13:18,784 INFO L134 CoverageAnalysis]: Checked inductivity of 10100 backedges. 0 proven. 10100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:13:18,804 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:13:18,804 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [101, 101] total 202 [2018-10-01 01:13:18,804 INFO L459 AbstractCegarLoop]: Interpolant automaton has 204 states [2018-10-01 01:13:18,807 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 204 interpolants. [2018-10-01 01:13:18,807 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:13:18,807 INFO L87 Difference]: Start difference. First operand 204 states and 204 transitions. Second operand 204 states. [2018-10-01 01:13:20,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:13:20,410 INFO L93 Difference]: Finished difference Result 207 states and 207 transitions. [2018-10-01 01:13:20,410 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 103 states. [2018-10-01 01:13:20,410 INFO L78 Accepts]: Start accepts. Automaton has 204 states. Word has length 203 [2018-10-01 01:13:20,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:13:20,411 INFO L225 Difference]: With dead ends: 207 [2018-10-01 01:13:20,411 INFO L226 Difference]: Without dead ends: 206 [2018-10-01 01:13:20,411 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 303 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 202 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1s Time [2018-10-01 01:13:20,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2018-10-01 01:13:20,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 206. [2018-10-01 01:13:20,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 206 states. [2018-10-01 01:13:20,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 206 transitions. [2018-10-01 01:13:20,417 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 206 transitions. Word has length 203 [2018-10-01 01:13:20,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:13:20,417 INFO L480 AbstractCegarLoop]: Abstraction has 206 states and 206 transitions. [2018-10-01 01:13:20,417 INFO L481 AbstractCegarLoop]: Interpolant automaton has 204 states. [2018-10-01 01:13:20,418 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 206 transitions. [2018-10-01 01:13:20,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2018-10-01 01:13:20,419 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:13:20,419 INFO L375 BasicCegarLoop]: trace histogram [102, 101, 1, 1] [2018-10-01 01:13:20,419 INFO L423 AbstractCegarLoop]: === Iteration 102 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:13:20,419 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:13:20,419 INFO L82 PathProgramCache]: Analyzing trace with hash 256384490, now seen corresponding path program 101 times [2018-10-01 01:13:20,419 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:13:20,420 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:13:20,420 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:13:20,420 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:13:20,420 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:13:20,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:13:21,306 INFO L134 CoverageAnalysis]: Checked inductivity of 10302 backedges. 0 proven. 10302 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:13:21,306 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:13:21,306 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 102 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 102 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:13:21,314 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 01:13:21,594 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 102 check-sat command(s) [2018-10-01 01:13:21,594 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:13:21,600 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:13:23,332 INFO L134 CoverageAnalysis]: Checked inductivity of 10302 backedges. 0 proven. 10302 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:13:23,352 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:13:23,353 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [102, 102] total 204 [2018-10-01 01:13:23,353 INFO L459 AbstractCegarLoop]: Interpolant automaton has 206 states [2018-10-01 01:13:23,356 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 206 interpolants. [2018-10-01 01:13:23,357 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:13:23,357 INFO L87 Difference]: Start difference. First operand 206 states and 206 transitions. Second operand 206 states. [2018-10-01 01:13:25,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:13:25,179 INFO L93 Difference]: Finished difference Result 209 states and 209 transitions. [2018-10-01 01:13:25,180 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2018-10-01 01:13:25,180 INFO L78 Accepts]: Start accepts. Automaton has 206 states. Word has length 205 [2018-10-01 01:13:25,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:13:25,181 INFO L225 Difference]: With dead ends: 209 [2018-10-01 01:13:25,181 INFO L226 Difference]: Without dead ends: 208 [2018-10-01 01:13:25,181 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 306 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 204 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.3s Time [2018-10-01 01:13:25,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2018-10-01 01:13:25,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 208. [2018-10-01 01:13:25,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 208 states. [2018-10-01 01:13:25,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 208 transitions. [2018-10-01 01:13:25,187 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 208 transitions. Word has length 205 [2018-10-01 01:13:25,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:13:25,188 INFO L480 AbstractCegarLoop]: Abstraction has 208 states and 208 transitions. [2018-10-01 01:13:25,188 INFO L481 AbstractCegarLoop]: Interpolant automaton has 206 states. [2018-10-01 01:13:25,188 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 208 transitions. [2018-10-01 01:13:25,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2018-10-01 01:13:25,189 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:13:25,189 INFO L375 BasicCegarLoop]: trace histogram [103, 102, 1, 1] [2018-10-01 01:13:25,189 INFO L423 AbstractCegarLoop]: === Iteration 103 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:13:25,189 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:13:25,189 INFO L82 PathProgramCache]: Analyzing trace with hash 1572360108, now seen corresponding path program 102 times [2018-10-01 01:13:25,189 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:13:25,190 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:13:25,190 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:13:25,190 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:13:25,190 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:13:25,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:13:25,906 INFO L134 CoverageAnalysis]: Checked inductivity of 10506 backedges. 0 proven. 10506 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:13:25,907 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:13:25,907 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 103 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 103 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:13:25,914 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 01:13:26,046 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 103 check-sat command(s) [2018-10-01 01:13:26,047 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:13:26,051 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:13:27,864 INFO L134 CoverageAnalysis]: Checked inductivity of 10506 backedges. 0 proven. 10506 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:13:27,884 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:13:27,885 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [103, 103] total 206 [2018-10-01 01:13:27,885 INFO L459 AbstractCegarLoop]: Interpolant automaton has 208 states [2018-10-01 01:13:27,888 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 208 interpolants. [2018-10-01 01:13:27,889 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:13:27,889 INFO L87 Difference]: Start difference. First operand 208 states and 208 transitions. Second operand 208 states. [2018-10-01 01:13:29,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:13:29,943 INFO L93 Difference]: Finished difference Result 211 states and 211 transitions. [2018-10-01 01:13:29,943 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 105 states. [2018-10-01 01:13:29,943 INFO L78 Accepts]: Start accepts. Automaton has 208 states. Word has length 207 [2018-10-01 01:13:29,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:13:29,943 INFO L225 Difference]: With dead ends: 211 [2018-10-01 01:13:29,944 INFO L226 Difference]: Without dead ends: 210 [2018-10-01 01:13:29,944 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 309 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 206 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.2s Time [2018-10-01 01:13:29,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2018-10-01 01:13:29,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 210. [2018-10-01 01:13:29,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 210 states. [2018-10-01 01:13:29,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 210 transitions. [2018-10-01 01:13:29,949 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 210 transitions. Word has length 207 [2018-10-01 01:13:29,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:13:29,950 INFO L480 AbstractCegarLoop]: Abstraction has 210 states and 210 transitions. [2018-10-01 01:13:29,950 INFO L481 AbstractCegarLoop]: Interpolant automaton has 208 states. [2018-10-01 01:13:29,950 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 210 transitions. [2018-10-01 01:13:29,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2018-10-01 01:13:29,951 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:13:29,951 INFO L375 BasicCegarLoop]: trace histogram [104, 103, 1, 1] [2018-10-01 01:13:29,951 INFO L423 AbstractCegarLoop]: === Iteration 104 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:13:29,952 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:13:29,952 INFO L82 PathProgramCache]: Analyzing trace with hash -790423314, now seen corresponding path program 103 times [2018-10-01 01:13:29,952 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:13:29,952 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:13:29,954 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:13:29,954 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:13:29,954 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:13:29,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:13:30,679 INFO L134 CoverageAnalysis]: Checked inductivity of 10712 backedges. 0 proven. 10712 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:13:30,679 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:13:30,679 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 104 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 104 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:13:30,687 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:13:30,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:13:30,742 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:13:32,594 INFO L134 CoverageAnalysis]: Checked inductivity of 10712 backedges. 0 proven. 10712 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:13:32,614 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:13:32,614 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [104, 104] total 208 [2018-10-01 01:13:32,615 INFO L459 AbstractCegarLoop]: Interpolant automaton has 210 states [2018-10-01 01:13:32,618 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 210 interpolants. [2018-10-01 01:13:32,618 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:13:32,618 INFO L87 Difference]: Start difference. First operand 210 states and 210 transitions. Second operand 210 states. [2018-10-01 01:13:34,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:13:34,105 INFO L93 Difference]: Finished difference Result 213 states and 213 transitions. [2018-10-01 01:13:34,105 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 106 states. [2018-10-01 01:13:34,105 INFO L78 Accepts]: Start accepts. Automaton has 210 states. Word has length 209 [2018-10-01 01:13:34,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:13:34,106 INFO L225 Difference]: With dead ends: 213 [2018-10-01 01:13:34,106 INFO L226 Difference]: Without dead ends: 212 [2018-10-01 01:13:34,106 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 312 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 208 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.3s Time [2018-10-01 01:13:34,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2018-10-01 01:13:34,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 212. [2018-10-01 01:13:34,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 212 states. [2018-10-01 01:13:34,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 212 transitions. [2018-10-01 01:13:34,112 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 212 transitions. Word has length 209 [2018-10-01 01:13:34,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:13:34,112 INFO L480 AbstractCegarLoop]: Abstraction has 212 states and 212 transitions. [2018-10-01 01:13:34,112 INFO L481 AbstractCegarLoop]: Interpolant automaton has 210 states. [2018-10-01 01:13:34,112 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 212 transitions. [2018-10-01 01:13:34,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2018-10-01 01:13:34,113 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:13:34,113 INFO L375 BasicCegarLoop]: trace histogram [105, 104, 1, 1] [2018-10-01 01:13:34,114 INFO L423 AbstractCegarLoop]: === Iteration 105 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:13:34,114 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:13:34,114 INFO L82 PathProgramCache]: Analyzing trace with hash 612407728, now seen corresponding path program 104 times [2018-10-01 01:13:34,114 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:13:34,114 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:13:34,115 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:13:34,115 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:13:34,115 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:13:34,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:13:34,857 INFO L134 CoverageAnalysis]: Checked inductivity of 10920 backedges. 0 proven. 10920 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:13:34,857 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:13:34,857 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 105 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 105 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:13:34,864 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 01:13:34,918 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 01:13:34,918 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:13:34,922 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:13:36,824 INFO L134 CoverageAnalysis]: Checked inductivity of 10920 backedges. 0 proven. 10920 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:13:36,844 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:13:36,844 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [105, 105] total 210 [2018-10-01 01:13:36,844 INFO L459 AbstractCegarLoop]: Interpolant automaton has 212 states [2018-10-01 01:13:36,848 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 212 interpolants. [2018-10-01 01:13:36,848 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:13:36,848 INFO L87 Difference]: Start difference. First operand 212 states and 212 transitions. Second operand 212 states. [2018-10-01 01:13:38,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:13:38,600 INFO L93 Difference]: Finished difference Result 215 states and 215 transitions. [2018-10-01 01:13:38,600 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 107 states. [2018-10-01 01:13:38,600 INFO L78 Accepts]: Start accepts. Automaton has 212 states. Word has length 211 [2018-10-01 01:13:38,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:13:38,601 INFO L225 Difference]: With dead ends: 215 [2018-10-01 01:13:38,601 INFO L226 Difference]: Without dead ends: 214 [2018-10-01 01:13:38,601 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 315 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 210 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.4s Time [2018-10-01 01:13:38,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2018-10-01 01:13:38,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 214. [2018-10-01 01:13:38,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 214 states. [2018-10-01 01:13:38,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 214 transitions. [2018-10-01 01:13:38,605 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 214 transitions. Word has length 211 [2018-10-01 01:13:38,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:13:38,605 INFO L480 AbstractCegarLoop]: Abstraction has 214 states and 214 transitions. [2018-10-01 01:13:38,605 INFO L481 AbstractCegarLoop]: Interpolant automaton has 212 states. [2018-10-01 01:13:38,605 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 214 transitions. [2018-10-01 01:13:38,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2018-10-01 01:13:38,606 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:13:38,606 INFO L375 BasicCegarLoop]: trace histogram [106, 105, 1, 1] [2018-10-01 01:13:38,606 INFO L423 AbstractCegarLoop]: === Iteration 106 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:13:38,607 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:13:38,607 INFO L82 PathProgramCache]: Analyzing trace with hash 113308146, now seen corresponding path program 105 times [2018-10-01 01:13:38,607 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:13:38,607 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:13:38,607 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:13:38,608 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:13:38,608 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:13:38,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:13:39,332 INFO L134 CoverageAnalysis]: Checked inductivity of 11130 backedges. 0 proven. 11130 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:13:39,332 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:13:39,332 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 106 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 106 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:13:39,345 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 01:13:39,492 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 106 check-sat command(s) [2018-10-01 01:13:39,493 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:13:39,498 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:13:41,316 INFO L134 CoverageAnalysis]: Checked inductivity of 11130 backedges. 0 proven. 11130 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:13:41,337 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:13:41,337 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [106, 106] total 212 [2018-10-01 01:13:41,337 INFO L459 AbstractCegarLoop]: Interpolant automaton has 214 states [2018-10-01 01:13:41,340 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 214 interpolants. [2018-10-01 01:13:41,340 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:13:41,340 INFO L87 Difference]: Start difference. First operand 214 states and 214 transitions. Second operand 214 states. [2018-10-01 01:13:43,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:13:43,467 INFO L93 Difference]: Finished difference Result 217 states and 217 transitions. [2018-10-01 01:13:43,468 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 108 states. [2018-10-01 01:13:43,468 INFO L78 Accepts]: Start accepts. Automaton has 214 states. Word has length 213 [2018-10-01 01:13:43,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:13:43,468 INFO L225 Difference]: With dead ends: 217 [2018-10-01 01:13:43,468 INFO L226 Difference]: Without dead ends: 216 [2018-10-01 01:13:43,469 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 318 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 212 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.3s Time [2018-10-01 01:13:43,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2018-10-01 01:13:43,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 216. [2018-10-01 01:13:43,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 216 states. [2018-10-01 01:13:43,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 216 transitions. [2018-10-01 01:13:43,474 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 216 transitions. Word has length 213 [2018-10-01 01:13:43,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:13:43,474 INFO L480 AbstractCegarLoop]: Abstraction has 216 states and 216 transitions. [2018-10-01 01:13:43,474 INFO L481 AbstractCegarLoop]: Interpolant automaton has 214 states. [2018-10-01 01:13:43,474 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 216 transitions. [2018-10-01 01:13:43,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2018-10-01 01:13:43,475 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:13:43,475 INFO L375 BasicCegarLoop]: trace histogram [107, 106, 1, 1] [2018-10-01 01:13:43,475 INFO L423 AbstractCegarLoop]: === Iteration 107 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:13:43,475 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:13:43,476 INFO L82 PathProgramCache]: Analyzing trace with hash 1514946996, now seen corresponding path program 106 times [2018-10-01 01:13:43,476 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:13:43,476 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:13:43,476 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:13:43,477 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:13:43,477 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:13:43,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:13:44,232 INFO L134 CoverageAnalysis]: Checked inductivity of 11342 backedges. 0 proven. 11342 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:13:44,233 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:13:44,233 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 107 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 107 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:13:44,240 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 01:13:44,301 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 01:13:44,301 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:13:44,306 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:13:46,133 INFO L134 CoverageAnalysis]: Checked inductivity of 11342 backedges. 0 proven. 11342 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:13:46,153 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:13:46,154 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [107, 107] total 214 [2018-10-01 01:13:46,154 INFO L459 AbstractCegarLoop]: Interpolant automaton has 216 states [2018-10-01 01:13:46,157 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 216 interpolants. [2018-10-01 01:13:46,157 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:13:46,157 INFO L87 Difference]: Start difference. First operand 216 states and 216 transitions. Second operand 216 states. [2018-10-01 01:13:47,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:13:47,997 INFO L93 Difference]: Finished difference Result 219 states and 219 transitions. [2018-10-01 01:13:47,998 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 109 states. [2018-10-01 01:13:47,998 INFO L78 Accepts]: Start accepts. Automaton has 216 states. Word has length 215 [2018-10-01 01:13:47,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:13:47,998 INFO L225 Difference]: With dead ends: 219 [2018-10-01 01:13:47,998 INFO L226 Difference]: Without dead ends: 218 [2018-10-01 01:13:47,999 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 321 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 214 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.3s Time [2018-10-01 01:13:47,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2018-10-01 01:13:48,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 218. [2018-10-01 01:13:48,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2018-10-01 01:13:48,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 218 transitions. [2018-10-01 01:13:48,002 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 218 transitions. Word has length 215 [2018-10-01 01:13:48,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:13:48,003 INFO L480 AbstractCegarLoop]: Abstraction has 218 states and 218 transitions. [2018-10-01 01:13:48,003 INFO L481 AbstractCegarLoop]: Interpolant automaton has 216 states. [2018-10-01 01:13:48,003 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 218 transitions. [2018-10-01 01:13:48,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2018-10-01 01:13:48,004 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:13:48,004 INFO L375 BasicCegarLoop]: trace histogram [108, 107, 1, 1] [2018-10-01 01:13:48,004 INFO L423 AbstractCegarLoop]: === Iteration 108 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:13:48,004 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:13:48,004 INFO L82 PathProgramCache]: Analyzing trace with hash -129849098, now seen corresponding path program 107 times [2018-10-01 01:13:48,004 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:13:48,004 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:13:48,005 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:13:48,005 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:13:48,005 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:13:48,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:13:48,771 INFO L134 CoverageAnalysis]: Checked inductivity of 11556 backedges. 0 proven. 11556 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:13:48,771 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:13:48,772 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 108 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 108 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:13:48,779 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 01:13:48,955 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 108 check-sat command(s) [2018-10-01 01:13:48,955 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:13:48,961 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:13:50,720 INFO L134 CoverageAnalysis]: Checked inductivity of 11556 backedges. 0 proven. 11556 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:13:50,741 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:13:50,742 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [108, 108] total 216 [2018-10-01 01:13:50,742 INFO L459 AbstractCegarLoop]: Interpolant automaton has 218 states [2018-10-01 01:13:50,746 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 218 interpolants. [2018-10-01 01:13:50,746 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:13:50,746 INFO L87 Difference]: Start difference. First operand 218 states and 218 transitions. Second operand 218 states. [2018-10-01 01:13:52,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:13:52,613 INFO L93 Difference]: Finished difference Result 221 states and 221 transitions. [2018-10-01 01:13:52,613 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 110 states. [2018-10-01 01:13:52,613 INFO L78 Accepts]: Start accepts. Automaton has 218 states. Word has length 217 [2018-10-01 01:13:52,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:13:52,614 INFO L225 Difference]: With dead ends: 221 [2018-10-01 01:13:52,614 INFO L226 Difference]: Without dead ends: 220 [2018-10-01 01:13:52,614 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 324 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 216 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.2s Time [2018-10-01 01:13:52,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2018-10-01 01:13:52,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 220. [2018-10-01 01:13:52,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 220 states. [2018-10-01 01:13:52,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 220 transitions. [2018-10-01 01:13:52,619 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 220 transitions. Word has length 217 [2018-10-01 01:13:52,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:13:52,619 INFO L480 AbstractCegarLoop]: Abstraction has 220 states and 220 transitions. [2018-10-01 01:13:52,619 INFO L481 AbstractCegarLoop]: Interpolant automaton has 218 states. [2018-10-01 01:13:52,619 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 220 transitions. [2018-10-01 01:13:52,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2018-10-01 01:13:52,620 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:13:52,620 INFO L375 BasicCegarLoop]: trace histogram [109, 108, 1, 1] [2018-10-01 01:13:52,620 INFO L423 AbstractCegarLoop]: === Iteration 109 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:13:52,620 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:13:52,620 INFO L82 PathProgramCache]: Analyzing trace with hash -230930504, now seen corresponding path program 108 times [2018-10-01 01:13:52,620 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:13:52,621 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:13:52,621 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:13:52,621 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:13:52,621 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:13:52,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:13:53,404 INFO L134 CoverageAnalysis]: Checked inductivity of 11772 backedges. 0 proven. 11772 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:13:53,404 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:13:53,404 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 109 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 109 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:13:53,411 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 01:13:53,550 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 109 check-sat command(s) [2018-10-01 01:13:53,550 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:13:53,554 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:13:55,476 INFO L134 CoverageAnalysis]: Checked inductivity of 11772 backedges. 0 proven. 11772 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:13:55,496 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:13:55,497 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [109, 109] total 218 [2018-10-01 01:13:55,497 INFO L459 AbstractCegarLoop]: Interpolant automaton has 220 states [2018-10-01 01:13:55,500 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 220 interpolants. [2018-10-01 01:13:55,500 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:13:55,500 INFO L87 Difference]: Start difference. First operand 220 states and 220 transitions. Second operand 220 states. [2018-10-01 01:13:57,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:13:57,821 INFO L93 Difference]: Finished difference Result 223 states and 223 transitions. [2018-10-01 01:13:57,821 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 111 states. [2018-10-01 01:13:57,821 INFO L78 Accepts]: Start accepts. Automaton has 220 states. Word has length 219 [2018-10-01 01:13:57,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:13:57,822 INFO L225 Difference]: With dead ends: 223 [2018-10-01 01:13:57,822 INFO L226 Difference]: Without dead ends: 222 [2018-10-01 01:13:57,822 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 327 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 218 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.4s Time [2018-10-01 01:13:57,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2018-10-01 01:13:57,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 222. [2018-10-01 01:13:57,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 222 states. [2018-10-01 01:13:57,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 222 transitions. [2018-10-01 01:13:57,828 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 222 transitions. Word has length 219 [2018-10-01 01:13:57,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:13:57,829 INFO L480 AbstractCegarLoop]: Abstraction has 222 states and 222 transitions. [2018-10-01 01:13:57,829 INFO L481 AbstractCegarLoop]: Interpolant automaton has 220 states. [2018-10-01 01:13:57,829 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 222 transitions. [2018-10-01 01:13:57,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2018-10-01 01:13:57,830 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:13:57,830 INFO L375 BasicCegarLoop]: trace histogram [110, 109, 1, 1] [2018-10-01 01:13:57,830 INFO L423 AbstractCegarLoop]: === Iteration 110 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:13:57,830 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:13:57,830 INFO L82 PathProgramCache]: Analyzing trace with hash 1414086138, now seen corresponding path program 109 times [2018-10-01 01:13:57,830 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:13:57,830 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:13:57,831 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:13:57,831 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:13:57,831 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:13:57,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:13:58,641 INFO L134 CoverageAnalysis]: Checked inductivity of 11990 backedges. 0 proven. 11990 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:13:58,641 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:13:58,642 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 110 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 110 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:13:58,649 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:13:58,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:13:58,704 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:14:00,651 INFO L134 CoverageAnalysis]: Checked inductivity of 11990 backedges. 0 proven. 11990 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:14:00,672 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:14:00,672 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [110, 110] total 220 [2018-10-01 01:14:00,673 INFO L459 AbstractCegarLoop]: Interpolant automaton has 222 states [2018-10-01 01:14:00,676 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 222 interpolants. [2018-10-01 01:14:00,676 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:14:00,676 INFO L87 Difference]: Start difference. First operand 222 states and 222 transitions. Second operand 222 states. [2018-10-01 01:14:02,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:14:02,460 INFO L93 Difference]: Finished difference Result 225 states and 225 transitions. [2018-10-01 01:14:02,460 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 112 states. [2018-10-01 01:14:02,460 INFO L78 Accepts]: Start accepts. Automaton has 222 states. Word has length 221 [2018-10-01 01:14:02,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:14:02,461 INFO L225 Difference]: With dead ends: 225 [2018-10-01 01:14:02,461 INFO L226 Difference]: Without dead ends: 224 [2018-10-01 01:14:02,461 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 330 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 220 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.4s Time [2018-10-01 01:14:02,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2018-10-01 01:14:02,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 224. [2018-10-01 01:14:02,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 224 states. [2018-10-01 01:14:02,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 224 transitions. [2018-10-01 01:14:02,465 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 224 transitions. Word has length 221 [2018-10-01 01:14:02,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:14:02,465 INFO L480 AbstractCegarLoop]: Abstraction has 224 states and 224 transitions. [2018-10-01 01:14:02,465 INFO L481 AbstractCegarLoop]: Interpolant automaton has 222 states. [2018-10-01 01:14:02,465 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 224 transitions. [2018-10-01 01:14:02,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2018-10-01 01:14:02,466 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:14:02,466 INFO L375 BasicCegarLoop]: trace histogram [111, 110, 1, 1] [2018-10-01 01:14:02,466 INFO L423 AbstractCegarLoop]: === Iteration 111 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:14:02,466 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:14:02,466 INFO L82 PathProgramCache]: Analyzing trace with hash 1727114172, now seen corresponding path program 110 times [2018-10-01 01:14:02,466 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:14:02,466 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:14:02,467 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:14:02,467 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:14:02,467 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:14:02,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:14:03,280 INFO L134 CoverageAnalysis]: Checked inductivity of 12210 backedges. 0 proven. 12210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:14:03,280 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:14:03,281 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 111 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 111 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:14:03,288 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 01:14:03,344 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 01:14:03,345 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:14:03,348 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:14:05,252 INFO L134 CoverageAnalysis]: Checked inductivity of 12210 backedges. 0 proven. 12210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:14:05,273 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:14:05,273 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [111, 111] total 222 [2018-10-01 01:14:05,274 INFO L459 AbstractCegarLoop]: Interpolant automaton has 224 states [2018-10-01 01:14:05,277 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 224 interpolants. [2018-10-01 01:14:05,277 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:14:05,277 INFO L87 Difference]: Start difference. First operand 224 states and 224 transitions. Second operand 224 states. [2018-10-01 01:14:07,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:14:07,588 INFO L93 Difference]: Finished difference Result 227 states and 227 transitions. [2018-10-01 01:14:07,588 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 113 states. [2018-10-01 01:14:07,588 INFO L78 Accepts]: Start accepts. Automaton has 224 states. Word has length 223 [2018-10-01 01:14:07,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:14:07,588 INFO L225 Difference]: With dead ends: 227 [2018-10-01 01:14:07,589 INFO L226 Difference]: Without dead ends: 226 [2018-10-01 01:14:07,589 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 333 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 222 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.4s Time [2018-10-01 01:14:07,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2018-10-01 01:14:07,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 226. [2018-10-01 01:14:07,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 226 states. [2018-10-01 01:14:07,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 226 transitions. [2018-10-01 01:14:07,593 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 226 transitions. Word has length 223 [2018-10-01 01:14:07,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:14:07,593 INFO L480 AbstractCegarLoop]: Abstraction has 226 states and 226 transitions. [2018-10-01 01:14:07,593 INFO L481 AbstractCegarLoop]: Interpolant automaton has 224 states. [2018-10-01 01:14:07,593 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 226 transitions. [2018-10-01 01:14:07,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2018-10-01 01:14:07,594 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:14:07,594 INFO L375 BasicCegarLoop]: trace histogram [112, 111, 1, 1] [2018-10-01 01:14:07,594 INFO L423 AbstractCegarLoop]: === Iteration 112 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:14:07,594 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:14:07,594 INFO L82 PathProgramCache]: Analyzing trace with hash 1899344126, now seen corresponding path program 111 times [2018-10-01 01:14:07,594 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:14:07,594 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:14:07,595 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:14:07,595 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:14:07,595 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:14:07,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:14:08,369 INFO L134 CoverageAnalysis]: Checked inductivity of 12432 backedges. 0 proven. 12432 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:14:08,369 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:14:08,369 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 112 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 112 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:14:08,376 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 01:14:08,537 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 112 check-sat command(s) [2018-10-01 01:14:08,537 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:14:08,540 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:14:10,563 INFO L134 CoverageAnalysis]: Checked inductivity of 12432 backedges. 0 proven. 12432 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:14:10,583 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:14:10,584 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [112, 112] total 224 [2018-10-01 01:14:10,584 INFO L459 AbstractCegarLoop]: Interpolant automaton has 226 states [2018-10-01 01:14:10,587 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 226 interpolants. [2018-10-01 01:14:10,587 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:14:10,587 INFO L87 Difference]: Start difference. First operand 226 states and 226 transitions. Second operand 226 states. [2018-10-01 01:14:12,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:14:12,533 INFO L93 Difference]: Finished difference Result 229 states and 229 transitions. [2018-10-01 01:14:12,533 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 114 states. [2018-10-01 01:14:12,533 INFO L78 Accepts]: Start accepts. Automaton has 226 states. Word has length 225 [2018-10-01 01:14:12,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:14:12,533 INFO L225 Difference]: With dead ends: 229 [2018-10-01 01:14:12,534 INFO L226 Difference]: Without dead ends: 228 [2018-10-01 01:14:12,534 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 336 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 224 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.5s Time [2018-10-01 01:14:12,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2018-10-01 01:14:12,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 228. [2018-10-01 01:14:12,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 228 states. [2018-10-01 01:14:12,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 228 transitions. [2018-10-01 01:14:12,538 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 228 transitions. Word has length 225 [2018-10-01 01:14:12,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:14:12,538 INFO L480 AbstractCegarLoop]: Abstraction has 228 states and 228 transitions. [2018-10-01 01:14:12,538 INFO L481 AbstractCegarLoop]: Interpolant automaton has 226 states. [2018-10-01 01:14:12,538 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 228 transitions. [2018-10-01 01:14:12,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2018-10-01 01:14:12,539 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:14:12,539 INFO L375 BasicCegarLoop]: trace histogram [113, 112, 1, 1] [2018-10-01 01:14:12,539 INFO L423 AbstractCegarLoop]: === Iteration 113 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:14:12,539 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:14:12,539 INFO L82 PathProgramCache]: Analyzing trace with hash -91394624, now seen corresponding path program 112 times [2018-10-01 01:14:12,540 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:14:12,540 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:14:12,540 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:14:12,540 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:14:12,540 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:14:12,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:14:13,381 INFO L134 CoverageAnalysis]: Checked inductivity of 12656 backedges. 0 proven. 12656 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:14:13,381 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:14:13,381 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 113 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 113 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:14:13,388 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 01:14:13,453 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 01:14:13,453 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:14:13,457 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:14:15,430 INFO L134 CoverageAnalysis]: Checked inductivity of 12656 backedges. 0 proven. 12656 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:14:15,450 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:14:15,450 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [113, 113] total 226 [2018-10-01 01:14:15,451 INFO L459 AbstractCegarLoop]: Interpolant automaton has 228 states [2018-10-01 01:14:15,454 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 228 interpolants. [2018-10-01 01:14:15,454 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:14:15,454 INFO L87 Difference]: Start difference. First operand 228 states and 228 transitions. Second operand 228 states. [2018-10-01 01:14:17,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:14:17,871 INFO L93 Difference]: Finished difference Result 231 states and 231 transitions. [2018-10-01 01:14:17,871 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 115 states. [2018-10-01 01:14:17,872 INFO L78 Accepts]: Start accepts. Automaton has 228 states. Word has length 227 [2018-10-01 01:14:17,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:14:17,872 INFO L225 Difference]: With dead ends: 231 [2018-10-01 01:14:17,872 INFO L226 Difference]: Without dead ends: 230 [2018-10-01 01:14:17,872 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 339 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 226 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.5s Time [2018-10-01 01:14:17,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2018-10-01 01:14:17,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 230. [2018-10-01 01:14:17,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 230 states. [2018-10-01 01:14:17,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 230 transitions. [2018-10-01 01:14:17,876 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 230 transitions. Word has length 227 [2018-10-01 01:14:17,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:14:17,877 INFO L480 AbstractCegarLoop]: Abstraction has 230 states and 230 transitions. [2018-10-01 01:14:17,877 INFO L481 AbstractCegarLoop]: Interpolant automaton has 228 states. [2018-10-01 01:14:17,877 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 230 transitions. [2018-10-01 01:14:17,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2018-10-01 01:14:17,877 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:14:17,878 INFO L375 BasicCegarLoop]: trace histogram [114, 113, 1, 1] [2018-10-01 01:14:17,878 INFO L423 AbstractCegarLoop]: === Iteration 114 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:14:17,878 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:14:17,878 INFO L82 PathProgramCache]: Analyzing trace with hash -1930886654, now seen corresponding path program 113 times [2018-10-01 01:14:17,878 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:14:17,878 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:14:17,878 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:14:17,879 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:14:17,879 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:14:17,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:14:18,695 INFO L134 CoverageAnalysis]: Checked inductivity of 12882 backedges. 0 proven. 12882 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:14:18,695 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:14:18,695 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 114 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 114 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:14:18,702 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 01:14:18,925 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 114 check-sat command(s) [2018-10-01 01:14:18,925 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:14:18,931 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:14:20,958 INFO L134 CoverageAnalysis]: Checked inductivity of 12882 backedges. 0 proven. 12882 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:14:20,978 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:14:20,978 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [114, 114] total 228 [2018-10-01 01:14:20,979 INFO L459 AbstractCegarLoop]: Interpolant automaton has 230 states [2018-10-01 01:14:20,982 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 230 interpolants. [2018-10-01 01:14:20,982 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:14:20,982 INFO L87 Difference]: Start difference. First operand 230 states and 230 transitions. Second operand 230 states. [2018-10-01 01:14:23,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:14:23,008 INFO L93 Difference]: Finished difference Result 233 states and 233 transitions. [2018-10-01 01:14:23,008 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 116 states. [2018-10-01 01:14:23,008 INFO L78 Accepts]: Start accepts. Automaton has 230 states. Word has length 229 [2018-10-01 01:14:23,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:14:23,009 INFO L225 Difference]: With dead ends: 233 [2018-10-01 01:14:23,009 INFO L226 Difference]: Without dead ends: 232 [2018-10-01 01:14:23,009 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 342 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 228 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.5s Time [2018-10-01 01:14:23,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2018-10-01 01:14:23,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 232. [2018-10-01 01:14:23,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 232 states. [2018-10-01 01:14:23,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 232 transitions. [2018-10-01 01:14:23,013 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 232 transitions. Word has length 229 [2018-10-01 01:14:23,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:14:23,013 INFO L480 AbstractCegarLoop]: Abstraction has 232 states and 232 transitions. [2018-10-01 01:14:23,013 INFO L481 AbstractCegarLoop]: Interpolant automaton has 230 states. [2018-10-01 01:14:23,014 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 232 transitions. [2018-10-01 01:14:23,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2018-10-01 01:14:23,014 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:14:23,014 INFO L375 BasicCegarLoop]: trace histogram [115, 114, 1, 1] [2018-10-01 01:14:23,014 INFO L423 AbstractCegarLoop]: === Iteration 115 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:14:23,015 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:14:23,015 INFO L82 PathProgramCache]: Analyzing trace with hash -156201532, now seen corresponding path program 114 times [2018-10-01 01:14:23,015 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:14:23,015 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:14:23,015 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:14:23,015 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:14:23,015 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:14:23,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:14:23,821 INFO L134 CoverageAnalysis]: Checked inductivity of 13110 backedges. 0 proven. 13110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:14:23,822 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:14:23,822 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 115 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 115 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:14:23,828 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 01:14:23,981 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 115 check-sat command(s) [2018-10-01 01:14:23,981 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:14:23,985 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:14:26,182 INFO L134 CoverageAnalysis]: Checked inductivity of 13110 backedges. 0 proven. 13110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:14:26,202 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:14:26,203 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [115, 115] total 230 [2018-10-01 01:14:26,203 INFO L459 AbstractCegarLoop]: Interpolant automaton has 232 states [2018-10-01 01:14:26,206 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 232 interpolants. [2018-10-01 01:14:26,206 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:14:26,207 INFO L87 Difference]: Start difference. First operand 232 states and 232 transitions. Second operand 232 states. [2018-10-01 01:14:28,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:14:28,759 INFO L93 Difference]: Finished difference Result 235 states and 235 transitions. [2018-10-01 01:14:28,759 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 117 states. [2018-10-01 01:14:28,759 INFO L78 Accepts]: Start accepts. Automaton has 232 states. Word has length 231 [2018-10-01 01:14:28,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:14:28,760 INFO L225 Difference]: With dead ends: 235 [2018-10-01 01:14:28,760 INFO L226 Difference]: Without dead ends: 234 [2018-10-01 01:14:28,760 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 345 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 230 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.7s Time [2018-10-01 01:14:28,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2018-10-01 01:14:28,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 234. [2018-10-01 01:14:28,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 234 states. [2018-10-01 01:14:28,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 234 transitions. [2018-10-01 01:14:28,764 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 234 transitions. Word has length 231 [2018-10-01 01:14:28,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:14:28,764 INFO L480 AbstractCegarLoop]: Abstraction has 234 states and 234 transitions. [2018-10-01 01:14:28,764 INFO L481 AbstractCegarLoop]: Interpolant automaton has 232 states. [2018-10-01 01:14:28,765 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 234 transitions. [2018-10-01 01:14:28,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2018-10-01 01:14:28,765 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:14:28,765 INFO L375 BasicCegarLoop]: trace histogram [116, 115, 1, 1] [2018-10-01 01:14:28,766 INFO L423 AbstractCegarLoop]: === Iteration 116 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:14:28,766 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:14:28,766 INFO L82 PathProgramCache]: Analyzing trace with hash 214184198, now seen corresponding path program 115 times [2018-10-01 01:14:28,766 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:14:28,766 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:14:28,767 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:14:28,767 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:14:28,767 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:14:28,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:14:29,601 INFO L134 CoverageAnalysis]: Checked inductivity of 13340 backedges. 0 proven. 13340 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:14:29,601 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:14:29,602 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 116 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 116 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:14:29,608 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:14:29,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:14:29,670 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:14:31,739 INFO L134 CoverageAnalysis]: Checked inductivity of 13340 backedges. 0 proven. 13340 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:14:31,759 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:14:31,759 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [116, 116] total 232 [2018-10-01 01:14:31,760 INFO L459 AbstractCegarLoop]: Interpolant automaton has 234 states [2018-10-01 01:14:31,763 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 234 interpolants. [2018-10-01 01:14:31,763 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:14:31,763 INFO L87 Difference]: Start difference. First operand 234 states and 234 transitions. Second operand 234 states. [2018-10-01 01:14:33,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:14:33,936 INFO L93 Difference]: Finished difference Result 237 states and 237 transitions. [2018-10-01 01:14:33,936 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 118 states. [2018-10-01 01:14:33,936 INFO L78 Accepts]: Start accepts. Automaton has 234 states. Word has length 233 [2018-10-01 01:14:33,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:14:33,937 INFO L225 Difference]: With dead ends: 237 [2018-10-01 01:14:33,937 INFO L226 Difference]: Without dead ends: 236 [2018-10-01 01:14:33,937 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 348 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 232 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.6s Time [2018-10-01 01:14:33,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2018-10-01 01:14:33,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 236. [2018-10-01 01:14:33,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 236 states. [2018-10-01 01:14:33,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 236 transitions. [2018-10-01 01:14:33,941 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 236 transitions. Word has length 233 [2018-10-01 01:14:33,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:14:33,941 INFO L480 AbstractCegarLoop]: Abstraction has 236 states and 236 transitions. [2018-10-01 01:14:33,941 INFO L481 AbstractCegarLoop]: Interpolant automaton has 234 states. [2018-10-01 01:14:33,941 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 236 transitions. [2018-10-01 01:14:33,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2018-10-01 01:14:33,942 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:14:33,942 INFO L375 BasicCegarLoop]: trace histogram [117, 116, 1, 1] [2018-10-01 01:14:33,942 INFO L423 AbstractCegarLoop]: === Iteration 117 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:14:33,942 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:14:33,942 INFO L82 PathProgramCache]: Analyzing trace with hash -327414840, now seen corresponding path program 116 times [2018-10-01 01:14:33,943 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:14:33,943 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:14:33,943 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:14:33,943 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:14:33,943 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:14:33,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:14:34,794 INFO L134 CoverageAnalysis]: Checked inductivity of 13572 backedges. 0 proven. 13572 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:14:34,794 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:14:34,794 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 117 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 117 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:14:34,802 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 01:14:34,861 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 01:14:34,861 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:14:34,865 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:14:36,959 INFO L134 CoverageAnalysis]: Checked inductivity of 13572 backedges. 0 proven. 13572 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:14:36,981 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:14:36,981 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [117, 117] total 234 [2018-10-01 01:14:36,981 INFO L459 AbstractCegarLoop]: Interpolant automaton has 236 states [2018-10-01 01:14:36,985 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 236 interpolants. [2018-10-01 01:14:36,985 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:14:36,985 INFO L87 Difference]: Start difference. First operand 236 states and 236 transitions. Second operand 236 states. [2018-10-01 01:14:38,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:14:38,993 INFO L93 Difference]: Finished difference Result 239 states and 239 transitions. [2018-10-01 01:14:38,993 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 119 states. [2018-10-01 01:14:38,993 INFO L78 Accepts]: Start accepts. Automaton has 236 states. Word has length 235 [2018-10-01 01:14:38,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:14:38,994 INFO L225 Difference]: With dead ends: 239 [2018-10-01 01:14:38,994 INFO L226 Difference]: Without dead ends: 238 [2018-10-01 01:14:38,994 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 351 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 234 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.6s Time [2018-10-01 01:14:38,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2018-10-01 01:14:38,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 238. [2018-10-01 01:14:38,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 238 states. [2018-10-01 01:14:38,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 238 transitions. [2018-10-01 01:14:38,998 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 238 transitions. Word has length 235 [2018-10-01 01:14:38,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:14:38,998 INFO L480 AbstractCegarLoop]: Abstraction has 238 states and 238 transitions. [2018-10-01 01:14:38,998 INFO L481 AbstractCegarLoop]: Interpolant automaton has 236 states. [2018-10-01 01:14:38,999 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 238 transitions. [2018-10-01 01:14:38,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2018-10-01 01:14:38,999 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:14:39,000 INFO L375 BasicCegarLoop]: trace histogram [118, 117, 1, 1] [2018-10-01 01:14:39,000 INFO L423 AbstractCegarLoop]: === Iteration 118 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:14:39,000 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:14:39,000 INFO L82 PathProgramCache]: Analyzing trace with hash -1113047542, now seen corresponding path program 117 times [2018-10-01 01:14:39,000 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:14:39,000 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:14:39,001 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:14:39,001 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:14:39,001 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:14:39,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:14:39,865 INFO L134 CoverageAnalysis]: Checked inductivity of 13806 backedges. 0 proven. 13806 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:14:39,865 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:14:39,865 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 118 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 118 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:14:39,872 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 01:14:40,047 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 118 check-sat command(s) [2018-10-01 01:14:40,048 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:14:40,053 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:14:42,471 INFO L134 CoverageAnalysis]: Checked inductivity of 13806 backedges. 0 proven. 13806 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:14:42,491 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:14:42,491 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [118, 118] total 236 [2018-10-01 01:14:42,492 INFO L459 AbstractCegarLoop]: Interpolant automaton has 238 states [2018-10-01 01:14:42,496 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 238 interpolants. [2018-10-01 01:14:42,496 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:14:42,496 INFO L87 Difference]: Start difference. First operand 238 states and 238 transitions. Second operand 238 states. [2018-10-01 01:14:45,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:14:45,190 INFO L93 Difference]: Finished difference Result 241 states and 241 transitions. [2018-10-01 01:14:45,190 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 120 states. [2018-10-01 01:14:45,190 INFO L78 Accepts]: Start accepts. Automaton has 238 states. Word has length 237 [2018-10-01 01:14:45,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:14:45,191 INFO L225 Difference]: With dead ends: 241 [2018-10-01 01:14:45,191 INFO L226 Difference]: Without dead ends: 240 [2018-10-01 01:14:45,191 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 354 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 236 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.9s Time [2018-10-01 01:14:45,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2018-10-01 01:14:45,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 240. [2018-10-01 01:14:45,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 240 states. [2018-10-01 01:14:45,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 240 transitions. [2018-10-01 01:14:45,195 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 240 transitions. Word has length 237 [2018-10-01 01:14:45,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:14:45,195 INFO L480 AbstractCegarLoop]: Abstraction has 240 states and 240 transitions. [2018-10-01 01:14:45,195 INFO L481 AbstractCegarLoop]: Interpolant automaton has 238 states. [2018-10-01 01:14:45,195 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 240 transitions. [2018-10-01 01:14:45,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2018-10-01 01:14:45,196 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:14:45,196 INFO L375 BasicCegarLoop]: trace histogram [119, 118, 1, 1] [2018-10-01 01:14:45,196 INFO L423 AbstractCegarLoop]: === Iteration 119 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:14:45,196 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:14:45,196 INFO L82 PathProgramCache]: Analyzing trace with hash -191830068, now seen corresponding path program 118 times [2018-10-01 01:14:45,197 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:14:45,197 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:14:45,197 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:14:45,197 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:14:45,197 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:14:45,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:14:46,080 INFO L134 CoverageAnalysis]: Checked inductivity of 14042 backedges. 0 proven. 14042 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:14:46,080 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:14:46,080 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 119 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 119 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:14:46,088 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 01:14:46,154 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 01:14:46,154 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:14:46,159 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:14:48,463 INFO L134 CoverageAnalysis]: Checked inductivity of 14042 backedges. 0 proven. 14042 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:14:48,483 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:14:48,484 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [119, 119] total 238 [2018-10-01 01:14:48,484 INFO L459 AbstractCegarLoop]: Interpolant automaton has 240 states [2018-10-01 01:14:48,487 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 240 interpolants. [2018-10-01 01:14:48,487 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:14:48,487 INFO L87 Difference]: Start difference. First operand 240 states and 240 transitions. Second operand 240 states. [2018-10-01 01:14:50,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:14:50,802 INFO L93 Difference]: Finished difference Result 243 states and 243 transitions. [2018-10-01 01:14:50,802 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 121 states. [2018-10-01 01:14:50,802 INFO L78 Accepts]: Start accepts. Automaton has 240 states. Word has length 239 [2018-10-01 01:14:50,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:14:50,803 INFO L225 Difference]: With dead ends: 243 [2018-10-01 01:14:50,803 INFO L226 Difference]: Without dead ends: 242 [2018-10-01 01:14:50,803 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 357 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 238 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.8s Time [2018-10-01 01:14:50,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2018-10-01 01:14:50,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 242. [2018-10-01 01:14:50,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 242 states. [2018-10-01 01:14:50,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 242 transitions. [2018-10-01 01:14:50,807 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 242 transitions. Word has length 239 [2018-10-01 01:14:50,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:14:50,807 INFO L480 AbstractCegarLoop]: Abstraction has 242 states and 242 transitions. [2018-10-01 01:14:50,807 INFO L481 AbstractCegarLoop]: Interpolant automaton has 240 states. [2018-10-01 01:14:50,808 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 242 transitions. [2018-10-01 01:14:50,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2018-10-01 01:14:50,808 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:14:50,808 INFO L375 BasicCegarLoop]: trace histogram [120, 119, 1, 1] [2018-10-01 01:14:50,808 INFO L423 AbstractCegarLoop]: === Iteration 120 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:14:50,809 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:14:50,809 INFO L82 PathProgramCache]: Analyzing trace with hash 334899470, now seen corresponding path program 119 times [2018-10-01 01:14:50,809 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:14:50,809 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:14:50,809 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:14:50,809 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:14:50,809 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:14:50,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:14:51,678 INFO L134 CoverageAnalysis]: Checked inductivity of 14280 backedges. 0 proven. 14280 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:14:51,678 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:14:51,678 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 120 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 120 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:14:51,686 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 01:14:51,879 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 120 check-sat command(s) [2018-10-01 01:14:51,879 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:14:51,887 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:14:54,252 INFO L134 CoverageAnalysis]: Checked inductivity of 14280 backedges. 0 proven. 14280 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:14:54,272 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:14:54,272 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [120, 120] total 240 [2018-10-01 01:14:54,273 INFO L459 AbstractCegarLoop]: Interpolant automaton has 242 states [2018-10-01 01:14:54,276 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 242 interpolants. [2018-10-01 01:14:54,276 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:14:54,276 INFO L87 Difference]: Start difference. First operand 242 states and 242 transitions. Second operand 242 states. [2018-10-01 01:14:56,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:14:56,432 INFO L93 Difference]: Finished difference Result 245 states and 245 transitions. [2018-10-01 01:14:56,432 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 122 states. [2018-10-01 01:14:56,432 INFO L78 Accepts]: Start accepts. Automaton has 242 states. Word has length 241 [2018-10-01 01:14:56,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:14:56,433 INFO L225 Difference]: With dead ends: 245 [2018-10-01 01:14:56,433 INFO L226 Difference]: Without dead ends: 244 [2018-10-01 01:14:56,433 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 360 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 240 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.9s Time [2018-10-01 01:14:56,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2018-10-01 01:14:56,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 244. [2018-10-01 01:14:56,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 244 states. [2018-10-01 01:14:56,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 244 transitions. [2018-10-01 01:14:56,437 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 244 transitions. Word has length 241 [2018-10-01 01:14:56,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:14:56,437 INFO L480 AbstractCegarLoop]: Abstraction has 244 states and 244 transitions. [2018-10-01 01:14:56,437 INFO L481 AbstractCegarLoop]: Interpolant automaton has 242 states. [2018-10-01 01:14:56,437 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 244 transitions. [2018-10-01 01:14:56,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2018-10-01 01:14:56,438 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:14:56,438 INFO L375 BasicCegarLoop]: trace histogram [121, 120, 1, 1] [2018-10-01 01:14:56,438 INFO L423 AbstractCegarLoop]: === Iteration 121 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:14:56,438 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:14:56,438 INFO L82 PathProgramCache]: Analyzing trace with hash -284155440, now seen corresponding path program 120 times [2018-10-01 01:14:56,439 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:14:56,439 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:14:56,439 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:14:56,439 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:14:56,439 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:14:56,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:14:57,340 INFO L134 CoverageAnalysis]: Checked inductivity of 14520 backedges. 0 proven. 14520 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:14:57,341 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:14:57,341 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 121 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 121 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:14:57,348 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 01:14:57,513 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 121 check-sat command(s) [2018-10-01 01:14:57,513 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:14:57,517 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:14:59,928 INFO L134 CoverageAnalysis]: Checked inductivity of 14520 backedges. 0 proven. 14520 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:14:59,948 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:14:59,948 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [121, 121] total 242 [2018-10-01 01:14:59,949 INFO L459 AbstractCegarLoop]: Interpolant automaton has 244 states [2018-10-01 01:14:59,952 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 244 interpolants. [2018-10-01 01:14:59,952 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:14:59,953 INFO L87 Difference]: Start difference. First operand 244 states and 244 transitions. Second operand 244 states. [2018-10-01 01:15:02,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:15:02,187 INFO L93 Difference]: Finished difference Result 247 states and 247 transitions. [2018-10-01 01:15:02,187 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 123 states. [2018-10-01 01:15:02,188 INFO L78 Accepts]: Start accepts. Automaton has 244 states. Word has length 243 [2018-10-01 01:15:02,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:15:02,188 INFO L225 Difference]: With dead ends: 247 [2018-10-01 01:15:02,188 INFO L226 Difference]: Without dead ends: 246 [2018-10-01 01:15:02,188 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 363 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 242 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.9s Time [2018-10-01 01:15:02,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246 states. [2018-10-01 01:15:02,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246 to 246. [2018-10-01 01:15:02,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 246 states. [2018-10-01 01:15:02,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 246 transitions. [2018-10-01 01:15:02,192 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 246 transitions. Word has length 243 [2018-10-01 01:15:02,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:15:02,192 INFO L480 AbstractCegarLoop]: Abstraction has 246 states and 246 transitions. [2018-10-01 01:15:02,193 INFO L481 AbstractCegarLoop]: Interpolant automaton has 244 states. [2018-10-01 01:15:02,193 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 246 transitions. [2018-10-01 01:15:02,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2018-10-01 01:15:02,193 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:15:02,193 INFO L375 BasicCegarLoop]: trace histogram [122, 121, 1, 1] [2018-10-01 01:15:02,193 INFO L423 AbstractCegarLoop]: === Iteration 122 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:15:02,194 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:15:02,194 INFO L82 PathProgramCache]: Analyzing trace with hash 1804530194, now seen corresponding path program 121 times [2018-10-01 01:15:02,194 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:15:02,194 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:15:02,194 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:15:02,194 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:15:02,194 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:15:02,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:15:03,126 INFO L134 CoverageAnalysis]: Checked inductivity of 14762 backedges. 0 proven. 14762 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:15:03,127 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:15:03,127 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 122 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 122 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:15:03,133 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:15:03,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:15:03,199 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:15:05,560 INFO L134 CoverageAnalysis]: Checked inductivity of 14762 backedges. 0 proven. 14762 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:15:05,581 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:15:05,582 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [122, 122] total 244 [2018-10-01 01:15:05,582 INFO L459 AbstractCegarLoop]: Interpolant automaton has 246 states [2018-10-01 01:15:05,587 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 246 interpolants. [2018-10-01 01:15:05,587 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:15:05,587 INFO L87 Difference]: Start difference. First operand 246 states and 246 transitions. Second operand 246 states. [2018-10-01 01:15:08,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:15:08,396 INFO L93 Difference]: Finished difference Result 249 states and 249 transitions. [2018-10-01 01:15:08,396 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 124 states. [2018-10-01 01:15:08,396 INFO L78 Accepts]: Start accepts. Automaton has 246 states. Word has length 245 [2018-10-01 01:15:08,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:15:08,397 INFO L225 Difference]: With dead ends: 249 [2018-10-01 01:15:08,397 INFO L226 Difference]: Without dead ends: 248 [2018-10-01 01:15:08,397 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 366 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 244 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.9s Time [2018-10-01 01:15:08,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2018-10-01 01:15:08,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 248. [2018-10-01 01:15:08,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 248 states. [2018-10-01 01:15:08,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 248 transitions. [2018-10-01 01:15:08,402 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 248 transitions. Word has length 245 [2018-10-01 01:15:08,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:15:08,402 INFO L480 AbstractCegarLoop]: Abstraction has 248 states and 248 transitions. [2018-10-01 01:15:08,402 INFO L481 AbstractCegarLoop]: Interpolant automaton has 246 states. [2018-10-01 01:15:08,402 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 248 transitions. [2018-10-01 01:15:08,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2018-10-01 01:15:08,403 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:15:08,403 INFO L375 BasicCegarLoop]: trace histogram [123, 122, 1, 1] [2018-10-01 01:15:08,403 INFO L423 AbstractCegarLoop]: === Iteration 123 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:15:08,403 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:15:08,403 INFO L82 PathProgramCache]: Analyzing trace with hash -1013270060, now seen corresponding path program 122 times [2018-10-01 01:15:08,403 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:15:08,404 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:15:08,404 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:15:08,404 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:15:08,404 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:15:08,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:15:09,368 INFO L134 CoverageAnalysis]: Checked inductivity of 15006 backedges. 0 proven. 15006 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:15:09,369 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:15:09,369 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 123 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 123 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:15:09,378 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 01:15:09,441 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 01:15:09,441 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:15:09,444 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:15:11,771 INFO L134 CoverageAnalysis]: Checked inductivity of 15006 backedges. 0 proven. 15006 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:15:11,791 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:15:11,791 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [123, 123] total 246 [2018-10-01 01:15:11,791 INFO L459 AbstractCegarLoop]: Interpolant automaton has 248 states [2018-10-01 01:15:11,795 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 248 interpolants. [2018-10-01 01:15:11,795 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:15:11,795 INFO L87 Difference]: Start difference. First operand 248 states and 248 transitions. Second operand 248 states. [2018-10-01 01:15:14,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:15:14,577 INFO L93 Difference]: Finished difference Result 251 states and 251 transitions. [2018-10-01 01:15:14,578 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 125 states. [2018-10-01 01:15:14,578 INFO L78 Accepts]: Start accepts. Automaton has 248 states. Word has length 247 [2018-10-01 01:15:14,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:15:14,578 INFO L225 Difference]: With dead ends: 251 [2018-10-01 01:15:14,578 INFO L226 Difference]: Without dead ends: 250 [2018-10-01 01:15:14,579 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 369 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 246 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.9s Time [2018-10-01 01:15:14,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2018-10-01 01:15:14,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 250. [2018-10-01 01:15:14,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 250 states. [2018-10-01 01:15:14,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 250 transitions. [2018-10-01 01:15:14,583 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 250 transitions. Word has length 247 [2018-10-01 01:15:14,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:15:14,583 INFO L480 AbstractCegarLoop]: Abstraction has 250 states and 250 transitions. [2018-10-01 01:15:14,583 INFO L481 AbstractCegarLoop]: Interpolant automaton has 248 states. [2018-10-01 01:15:14,583 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 250 transitions. [2018-10-01 01:15:14,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2018-10-01 01:15:14,584 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:15:14,584 INFO L375 BasicCegarLoop]: trace histogram [124, 123, 1, 1] [2018-10-01 01:15:14,584 INFO L423 AbstractCegarLoop]: === Iteration 124 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:15:14,584 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:15:14,584 INFO L82 PathProgramCache]: Analyzing trace with hash 1205049622, now seen corresponding path program 123 times [2018-10-01 01:15:14,585 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:15:14,585 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:15:14,585 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:15:14,585 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:15:14,585 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:15:14,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:15:15,498 INFO L134 CoverageAnalysis]: Checked inductivity of 15252 backedges. 0 proven. 15252 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:15:15,498 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:15:15,498 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 124 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 124 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:15:15,505 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 01:15:15,694 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 124 check-sat command(s) [2018-10-01 01:15:15,695 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:15:15,699 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:15:18,132 INFO L134 CoverageAnalysis]: Checked inductivity of 15252 backedges. 0 proven. 15252 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:15:18,152 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:15:18,152 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [124, 124] total 248 [2018-10-01 01:15:18,153 INFO L459 AbstractCegarLoop]: Interpolant automaton has 250 states [2018-10-01 01:15:18,156 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 250 interpolants. [2018-10-01 01:15:18,157 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:15:18,157 INFO L87 Difference]: Start difference. First operand 250 states and 250 transitions. Second operand 250 states. [2018-10-01 01:15:20,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:15:20,878 INFO L93 Difference]: Finished difference Result 253 states and 253 transitions. [2018-10-01 01:15:20,878 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 126 states. [2018-10-01 01:15:20,878 INFO L78 Accepts]: Start accepts. Automaton has 250 states. Word has length 249 [2018-10-01 01:15:20,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:15:20,879 INFO L225 Difference]: With dead ends: 253 [2018-10-01 01:15:20,879 INFO L226 Difference]: Without dead ends: 252 [2018-10-01 01:15:20,879 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 372 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 248 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.0s Time [2018-10-01 01:15:20,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252 states. [2018-10-01 01:15:20,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252 to 252. [2018-10-01 01:15:20,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 252 states. [2018-10-01 01:15:20,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 252 transitions. [2018-10-01 01:15:20,884 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 252 transitions. Word has length 249 [2018-10-01 01:15:20,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:15:20,885 INFO L480 AbstractCegarLoop]: Abstraction has 252 states and 252 transitions. [2018-10-01 01:15:20,885 INFO L481 AbstractCegarLoop]: Interpolant automaton has 250 states. [2018-10-01 01:15:20,885 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 252 transitions. [2018-10-01 01:15:20,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2018-10-01 01:15:20,885 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:15:20,885 INFO L375 BasicCegarLoop]: trace histogram [125, 124, 1, 1] [2018-10-01 01:15:20,886 INFO L423 AbstractCegarLoop]: === Iteration 125 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:15:20,886 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:15:20,886 INFO L82 PathProgramCache]: Analyzing trace with hash -1588482088, now seen corresponding path program 124 times [2018-10-01 01:15:20,886 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:15:20,886 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:15:20,886 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:15:20,886 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:15:20,886 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:15:20,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:15:21,806 INFO L134 CoverageAnalysis]: Checked inductivity of 15500 backedges. 0 proven. 15500 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:15:21,807 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:15:21,807 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 125 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 125 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:15:21,813 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 01:15:21,882 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 01:15:21,883 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:15:21,887 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:15:24,234 INFO L134 CoverageAnalysis]: Checked inductivity of 15500 backedges. 0 proven. 15500 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:15:24,254 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:15:24,254 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [125, 125] total 250 [2018-10-01 01:15:24,255 INFO L459 AbstractCegarLoop]: Interpolant automaton has 252 states [2018-10-01 01:15:24,259 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 252 interpolants. [2018-10-01 01:15:24,259 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:15:24,259 INFO L87 Difference]: Start difference. First operand 252 states and 252 transitions. Second operand 252 states. [2018-10-01 01:15:26,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:15:26,864 INFO L93 Difference]: Finished difference Result 255 states and 255 transitions. [2018-10-01 01:15:26,864 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 127 states. [2018-10-01 01:15:26,864 INFO L78 Accepts]: Start accepts. Automaton has 252 states. Word has length 251 [2018-10-01 01:15:26,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:15:26,865 INFO L225 Difference]: With dead ends: 255 [2018-10-01 01:15:26,865 INFO L226 Difference]: Without dead ends: 254 [2018-10-01 01:15:26,865 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 375 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 250 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.9s Time [2018-10-01 01:15:26,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2018-10-01 01:15:26,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 254. [2018-10-01 01:15:26,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 254 states. [2018-10-01 01:15:26,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 254 transitions. [2018-10-01 01:15:26,869 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 254 transitions. Word has length 251 [2018-10-01 01:15:26,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:15:26,869 INFO L480 AbstractCegarLoop]: Abstraction has 254 states and 254 transitions. [2018-10-01 01:15:26,869 INFO L481 AbstractCegarLoop]: Interpolant automaton has 252 states. [2018-10-01 01:15:26,870 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 254 transitions. [2018-10-01 01:15:26,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2018-10-01 01:15:26,870 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:15:26,870 INFO L375 BasicCegarLoop]: trace histogram [126, 125, 1, 1] [2018-10-01 01:15:26,871 INFO L423 AbstractCegarLoop]: === Iteration 126 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:15:26,871 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:15:26,871 INFO L82 PathProgramCache]: Analyzing trace with hash -1817895398, now seen corresponding path program 125 times [2018-10-01 01:15:26,871 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:15:26,871 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:15:26,871 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:15:26,871 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:15:26,871 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:15:26,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:15:27,797 INFO L134 CoverageAnalysis]: Checked inductivity of 15750 backedges. 0 proven. 15750 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:15:27,798 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:15:27,798 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 126 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 126 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:15:27,806 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 01:15:28,016 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 126 check-sat command(s) [2018-10-01 01:15:28,016 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:15:28,025 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:15:30,553 INFO L134 CoverageAnalysis]: Checked inductivity of 15750 backedges. 0 proven. 15750 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:15:30,575 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:15:30,575 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [126, 126] total 252 [2018-10-01 01:15:30,575 INFO L459 AbstractCegarLoop]: Interpolant automaton has 254 states [2018-10-01 01:15:30,579 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 254 interpolants. [2018-10-01 01:15:30,579 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:15:30,579 INFO L87 Difference]: Start difference. First operand 254 states and 254 transitions. Second operand 254 states. [2018-10-01 01:15:33,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:15:33,108 INFO L93 Difference]: Finished difference Result 257 states and 257 transitions. [2018-10-01 01:15:33,108 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 128 states. [2018-10-01 01:15:33,108 INFO L78 Accepts]: Start accepts. Automaton has 254 states. Word has length 253 [2018-10-01 01:15:33,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:15:33,109 INFO L225 Difference]: With dead ends: 257 [2018-10-01 01:15:33,109 INFO L226 Difference]: Without dead ends: 256 [2018-10-01 01:15:33,109 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 378 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 252 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.1s Time [2018-10-01 01:15:33,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2018-10-01 01:15:33,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 256. [2018-10-01 01:15:33,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 256 states. [2018-10-01 01:15:33,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 256 transitions. [2018-10-01 01:15:33,116 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 256 transitions. Word has length 253 [2018-10-01 01:15:33,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:15:33,116 INFO L480 AbstractCegarLoop]: Abstraction has 256 states and 256 transitions. [2018-10-01 01:15:33,116 INFO L481 AbstractCegarLoop]: Interpolant automaton has 254 states. [2018-10-01 01:15:33,116 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 256 transitions. [2018-10-01 01:15:33,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 256 [2018-10-01 01:15:33,117 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:15:33,117 INFO L375 BasicCegarLoop]: trace histogram [127, 126, 1, 1] [2018-10-01 01:15:33,118 INFO L423 AbstractCegarLoop]: === Iteration 127 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:15:33,118 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:15:33,118 INFO L82 PathProgramCache]: Analyzing trace with hash 1054213084, now seen corresponding path program 126 times [2018-10-01 01:15:33,118 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:15:33,118 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:15:33,119 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:15:33,119 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:15:33,119 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:15:33,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:15:34,096 INFO L134 CoverageAnalysis]: Checked inductivity of 16002 backedges. 0 proven. 16002 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:15:34,096 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:15:34,096 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 127 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 127 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:15:34,103 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 01:15:34,283 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 127 check-sat command(s) [2018-10-01 01:15:34,284 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:15:34,288 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:15:36,777 INFO L134 CoverageAnalysis]: Checked inductivity of 16002 backedges. 0 proven. 16002 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:15:36,797 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:15:36,797 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [127, 127] total 254 [2018-10-01 01:15:36,798 INFO L459 AbstractCegarLoop]: Interpolant automaton has 256 states [2018-10-01 01:15:36,802 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 256 interpolants. [2018-10-01 01:15:36,802 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:15:36,802 INFO L87 Difference]: Start difference. First operand 256 states and 256 transitions. Second operand 256 states. [2018-10-01 01:15:39,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:15:39,388 INFO L93 Difference]: Finished difference Result 259 states and 259 transitions. [2018-10-01 01:15:39,388 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 129 states. [2018-10-01 01:15:39,389 INFO L78 Accepts]: Start accepts. Automaton has 256 states. Word has length 255 [2018-10-01 01:15:39,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:15:39,389 INFO L225 Difference]: With dead ends: 259 [2018-10-01 01:15:39,389 INFO L226 Difference]: Without dead ends: 258 [2018-10-01 01:15:39,389 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 381 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 254 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.1s Time [2018-10-01 01:15:39,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2018-10-01 01:15:39,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 258. [2018-10-01 01:15:39,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 258 states. [2018-10-01 01:15:39,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 258 transitions. [2018-10-01 01:15:39,395 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 258 transitions. Word has length 255 [2018-10-01 01:15:39,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:15:39,395 INFO L480 AbstractCegarLoop]: Abstraction has 258 states and 258 transitions. [2018-10-01 01:15:39,395 INFO L481 AbstractCegarLoop]: Interpolant automaton has 256 states. [2018-10-01 01:15:39,395 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 258 transitions. [2018-10-01 01:15:39,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258 [2018-10-01 01:15:39,396 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:15:39,396 INFO L375 BasicCegarLoop]: trace histogram [128, 127, 1, 1] [2018-10-01 01:15:39,397 INFO L423 AbstractCegarLoop]: === Iteration 128 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:15:39,397 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:15:39,397 INFO L82 PathProgramCache]: Analyzing trace with hash -513507042, now seen corresponding path program 127 times [2018-10-01 01:15:39,397 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:15:39,397 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:15:39,398 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:15:39,398 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:15:39,398 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:15:39,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:15:40,400 INFO L134 CoverageAnalysis]: Checked inductivity of 16256 backedges. 0 proven. 16256 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:15:40,400 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:15:40,401 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 128 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 128 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:15:40,410 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:15:40,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:15:40,476 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:15:42,982 INFO L134 CoverageAnalysis]: Checked inductivity of 16256 backedges. 0 proven. 16256 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:15:43,003 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:15:43,003 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [128, 128] total 256 [2018-10-01 01:15:43,003 INFO L459 AbstractCegarLoop]: Interpolant automaton has 258 states [2018-10-01 01:15:43,007 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 258 interpolants. [2018-10-01 01:15:43,007 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:15:43,008 INFO L87 Difference]: Start difference. First operand 258 states and 258 transitions. Second operand 258 states. [2018-10-01 01:15:45,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:15:45,680 INFO L93 Difference]: Finished difference Result 261 states and 261 transitions. [2018-10-01 01:15:45,680 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 130 states. [2018-10-01 01:15:45,680 INFO L78 Accepts]: Start accepts. Automaton has 258 states. Word has length 257 [2018-10-01 01:15:45,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:15:45,681 INFO L225 Difference]: With dead ends: 261 [2018-10-01 01:15:45,681 INFO L226 Difference]: Without dead ends: 260 [2018-10-01 01:15:45,682 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 384 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 256 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.1s Time [2018-10-01 01:15:45,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260 states. [2018-10-01 01:15:45,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260 to 260. [2018-10-01 01:15:45,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 260 states. [2018-10-01 01:15:45,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260 states to 260 states and 260 transitions. [2018-10-01 01:15:45,687 INFO L78 Accepts]: Start accepts. Automaton has 260 states and 260 transitions. Word has length 257 [2018-10-01 01:15:45,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:15:45,688 INFO L480 AbstractCegarLoop]: Abstraction has 260 states and 260 transitions. [2018-10-01 01:15:45,688 INFO L481 AbstractCegarLoop]: Interpolant automaton has 258 states. [2018-10-01 01:15:45,688 INFO L276 IsEmpty]: Start isEmpty. Operand 260 states and 260 transitions. [2018-10-01 01:15:45,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 260 [2018-10-01 01:15:45,689 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:15:45,689 INFO L375 BasicCegarLoop]: trace histogram [129, 128, 1, 1] [2018-10-01 01:15:45,690 INFO L423 AbstractCegarLoop]: === Iteration 129 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:15:45,690 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:15:45,690 INFO L82 PathProgramCache]: Analyzing trace with hash 440972768, now seen corresponding path program 128 times [2018-10-01 01:15:45,690 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:15:45,690 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:15:45,691 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:15:45,691 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:15:45,691 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:15:45,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:15:46,641 INFO L134 CoverageAnalysis]: Checked inductivity of 16512 backedges. 0 proven. 16512 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:15:46,642 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:15:46,642 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 129 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 129 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:15:46,650 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 01:15:46,715 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 01:15:46,715 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:15:46,719 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:15:49,295 INFO L134 CoverageAnalysis]: Checked inductivity of 16512 backedges. 0 proven. 16512 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:15:49,316 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:15:49,316 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [129, 129] total 258 [2018-10-01 01:15:49,317 INFO L459 AbstractCegarLoop]: Interpolant automaton has 260 states [2018-10-01 01:15:49,321 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 260 interpolants. [2018-10-01 01:15:49,321 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:15:49,321 INFO L87 Difference]: Start difference. First operand 260 states and 260 transitions. Second operand 260 states. [2018-10-01 01:15:52,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:15:52,144 INFO L93 Difference]: Finished difference Result 263 states and 263 transitions. [2018-10-01 01:15:52,145 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 131 states. [2018-10-01 01:15:52,145 INFO L78 Accepts]: Start accepts. Automaton has 260 states. Word has length 259 [2018-10-01 01:15:52,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:15:52,145 INFO L225 Difference]: With dead ends: 263 [2018-10-01 01:15:52,146 INFO L226 Difference]: Without dead ends: 262 [2018-10-01 01:15:52,146 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 387 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 258 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.1s Time [2018-10-01 01:15:52,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2018-10-01 01:15:52,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 262. [2018-10-01 01:15:52,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 262 states. [2018-10-01 01:15:52,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 262 transitions. [2018-10-01 01:15:52,152 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 262 transitions. Word has length 259 [2018-10-01 01:15:52,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:15:52,153 INFO L480 AbstractCegarLoop]: Abstraction has 262 states and 262 transitions. [2018-10-01 01:15:52,153 INFO L481 AbstractCegarLoop]: Interpolant automaton has 260 states. [2018-10-01 01:15:52,153 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 262 transitions. [2018-10-01 01:15:52,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2018-10-01 01:15:52,154 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:15:52,154 INFO L375 BasicCegarLoop]: trace histogram [130, 129, 1, 1] [2018-10-01 01:15:52,154 INFO L423 AbstractCegarLoop]: === Iteration 130 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:15:52,154 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:15:52,154 INFO L82 PathProgramCache]: Analyzing trace with hash -1426931166, now seen corresponding path program 129 times [2018-10-01 01:15:52,154 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:15:52,155 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:15:52,155 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:15:52,155 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:15:52,155 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:15:52,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:15:53,158 INFO L134 CoverageAnalysis]: Checked inductivity of 16770 backedges. 0 proven. 16770 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:15:53,159 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:15:53,159 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 130 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 130 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:15:53,165 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 01:15:53,398 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 130 check-sat command(s) [2018-10-01 01:15:53,398 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:15:53,402 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:15:56,137 INFO L134 CoverageAnalysis]: Checked inductivity of 16770 backedges. 0 proven. 16770 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:15:56,158 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:15:56,158 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [130, 130] total 260 [2018-10-01 01:15:56,158 INFO L459 AbstractCegarLoop]: Interpolant automaton has 262 states [2018-10-01 01:15:56,162 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 262 interpolants. [2018-10-01 01:15:56,162 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:15:56,162 INFO L87 Difference]: Start difference. First operand 262 states and 262 transitions. Second operand 262 states. [2018-10-01 01:15:59,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:15:59,061 INFO L93 Difference]: Finished difference Result 265 states and 265 transitions. [2018-10-01 01:15:59,061 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 132 states. [2018-10-01 01:15:59,061 INFO L78 Accepts]: Start accepts. Automaton has 262 states. Word has length 261 [2018-10-01 01:15:59,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:15:59,062 INFO L225 Difference]: With dead ends: 265 [2018-10-01 01:15:59,062 INFO L226 Difference]: Without dead ends: 264 [2018-10-01 01:15:59,062 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 390 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 260 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.3s Time [2018-10-01 01:15:59,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2018-10-01 01:15:59,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 264. [2018-10-01 01:15:59,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 264 states. [2018-10-01 01:15:59,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 264 transitions. [2018-10-01 01:15:59,067 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 264 transitions. Word has length 261 [2018-10-01 01:15:59,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:15:59,067 INFO L480 AbstractCegarLoop]: Abstraction has 264 states and 264 transitions. [2018-10-01 01:15:59,067 INFO L481 AbstractCegarLoop]: Interpolant automaton has 262 states. [2018-10-01 01:15:59,067 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 264 transitions. [2018-10-01 01:15:59,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 264 [2018-10-01 01:15:59,068 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:15:59,068 INFO L375 BasicCegarLoop]: trace histogram [131, 130, 1, 1] [2018-10-01 01:15:59,068 INFO L423 AbstractCegarLoop]: === Iteration 131 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:15:59,068 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:15:59,068 INFO L82 PathProgramCache]: Analyzing trace with hash -1186282012, now seen corresponding path program 130 times [2018-10-01 01:15:59,068 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:15:59,068 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:15:59,069 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:15:59,069 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:15:59,069 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:15:59,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:16:00,175 INFO L134 CoverageAnalysis]: Checked inductivity of 17030 backedges. 0 proven. 17030 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:16:00,176 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:16:00,176 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 131 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 131 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:16:00,182 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 01:16:00,257 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 01:16:00,258 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:16:00,262 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:16:02,895 INFO L134 CoverageAnalysis]: Checked inductivity of 17030 backedges. 0 proven. 17030 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:16:02,918 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:16:02,919 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [131, 131] total 262 [2018-10-01 01:16:02,919 INFO L459 AbstractCegarLoop]: Interpolant automaton has 264 states [2018-10-01 01:16:02,923 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 264 interpolants. [2018-10-01 01:16:02,923 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:16:02,923 INFO L87 Difference]: Start difference. First operand 264 states and 264 transitions. Second operand 264 states. [2018-10-01 01:16:05,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:16:05,857 INFO L93 Difference]: Finished difference Result 267 states and 267 transitions. [2018-10-01 01:16:05,857 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 133 states. [2018-10-01 01:16:05,858 INFO L78 Accepts]: Start accepts. Automaton has 264 states. Word has length 263 [2018-10-01 01:16:05,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:16:05,858 INFO L225 Difference]: With dead ends: 267 [2018-10-01 01:16:05,858 INFO L226 Difference]: Without dead ends: 266 [2018-10-01 01:16:05,858 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 393 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 262 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.3s Time [2018-10-01 01:16:05,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2018-10-01 01:16:05,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 266. [2018-10-01 01:16:05,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 266 states. [2018-10-01 01:16:05,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 266 transitions. [2018-10-01 01:16:05,863 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 266 transitions. Word has length 263 [2018-10-01 01:16:05,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:16:05,863 INFO L480 AbstractCegarLoop]: Abstraction has 266 states and 266 transitions. [2018-10-01 01:16:05,863 INFO L481 AbstractCegarLoop]: Interpolant automaton has 264 states. [2018-10-01 01:16:05,863 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 266 transitions. [2018-10-01 01:16:05,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 266 [2018-10-01 01:16:05,864 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:16:05,864 INFO L375 BasicCegarLoop]: trace histogram [132, 131, 1, 1] [2018-10-01 01:16:05,864 INFO L423 AbstractCegarLoop]: === Iteration 132 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:16:05,864 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:16:05,864 INFO L82 PathProgramCache]: Analyzing trace with hash -1850679002, now seen corresponding path program 131 times [2018-10-01 01:16:05,864 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:16:05,864 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:16:05,865 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:16:05,865 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:16:05,865 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:16:05,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:16:06,833 INFO L134 CoverageAnalysis]: Checked inductivity of 17292 backedges. 0 proven. 17292 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:16:06,833 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:16:06,833 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 132 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 132 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:16:06,854 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 01:16:07,084 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 132 check-sat command(s) [2018-10-01 01:16:07,084 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:16:07,092 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:16:09,702 INFO L134 CoverageAnalysis]: Checked inductivity of 17292 backedges. 0 proven. 17292 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:16:09,722 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:16:09,723 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [132, 132] total 264 [2018-10-01 01:16:09,723 INFO L459 AbstractCegarLoop]: Interpolant automaton has 266 states [2018-10-01 01:16:09,727 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 266 interpolants. [2018-10-01 01:16:09,727 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:16:09,727 INFO L87 Difference]: Start difference. First operand 266 states and 266 transitions. Second operand 266 states. [2018-10-01 01:16:13,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:16:13,077 INFO L93 Difference]: Finished difference Result 269 states and 269 transitions. [2018-10-01 01:16:13,077 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 134 states. [2018-10-01 01:16:13,078 INFO L78 Accepts]: Start accepts. Automaton has 266 states. Word has length 265 [2018-10-01 01:16:13,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:16:13,078 INFO L225 Difference]: With dead ends: 269 [2018-10-01 01:16:13,078 INFO L226 Difference]: Without dead ends: 268 [2018-10-01 01:16:13,078 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 396 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 264 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.2s Time [2018-10-01 01:16:13,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268 states. [2018-10-01 01:16:13,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268 to 268. [2018-10-01 01:16:13,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 268 states. [2018-10-01 01:16:13,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268 states to 268 states and 268 transitions. [2018-10-01 01:16:13,082 INFO L78 Accepts]: Start accepts. Automaton has 268 states and 268 transitions. Word has length 265 [2018-10-01 01:16:13,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:16:13,083 INFO L480 AbstractCegarLoop]: Abstraction has 268 states and 268 transitions. [2018-10-01 01:16:13,083 INFO L481 AbstractCegarLoop]: Interpolant automaton has 266 states. [2018-10-01 01:16:13,083 INFO L276 IsEmpty]: Start isEmpty. Operand 268 states and 268 transitions. [2018-10-01 01:16:13,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 268 [2018-10-01 01:16:13,083 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:16:13,083 INFO L375 BasicCegarLoop]: trace histogram [133, 132, 1, 1] [2018-10-01 01:16:13,084 INFO L423 AbstractCegarLoop]: === Iteration 133 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:16:13,084 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:16:13,084 INFO L82 PathProgramCache]: Analyzing trace with hash -386059288, now seen corresponding path program 132 times [2018-10-01 01:16:13,084 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:16:13,084 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:16:13,084 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:16:13,084 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:16:13,084 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:16:13,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:16:14,055 INFO L134 CoverageAnalysis]: Checked inductivity of 17556 backedges. 0 proven. 17556 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:16:14,055 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:16:14,055 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 133 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 133 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:16:14,062 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 01:16:14,267 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 133 check-sat command(s) [2018-10-01 01:16:14,267 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:16:14,272 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:16:16,993 INFO L134 CoverageAnalysis]: Checked inductivity of 17556 backedges. 0 proven. 17556 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:16:17,014 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:16:17,014 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [133, 133] total 266 [2018-10-01 01:16:17,014 INFO L459 AbstractCegarLoop]: Interpolant automaton has 268 states [2018-10-01 01:16:17,021 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 268 interpolants. [2018-10-01 01:16:17,021 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:16:17,021 INFO L87 Difference]: Start difference. First operand 268 states and 268 transitions. Second operand 268 states. [2018-10-01 01:16:20,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:16:20,268 INFO L93 Difference]: Finished difference Result 271 states and 271 transitions. [2018-10-01 01:16:20,268 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 135 states. [2018-10-01 01:16:20,269 INFO L78 Accepts]: Start accepts. Automaton has 268 states. Word has length 267 [2018-10-01 01:16:20,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:16:20,269 INFO L225 Difference]: With dead ends: 271 [2018-10-01 01:16:20,269 INFO L226 Difference]: Without dead ends: 270 [2018-10-01 01:16:20,269 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 399 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 266 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.3s Time [2018-10-01 01:16:20,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270 states. [2018-10-01 01:16:20,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270 to 270. [2018-10-01 01:16:20,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 270 states. [2018-10-01 01:16:20,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 270 transitions. [2018-10-01 01:16:20,274 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 270 transitions. Word has length 267 [2018-10-01 01:16:20,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:16:20,274 INFO L480 AbstractCegarLoop]: Abstraction has 270 states and 270 transitions. [2018-10-01 01:16:20,274 INFO L481 AbstractCegarLoop]: Interpolant automaton has 268 states. [2018-10-01 01:16:20,274 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 270 transitions. [2018-10-01 01:16:20,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 270 [2018-10-01 01:16:20,275 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:16:20,275 INFO L375 BasicCegarLoop]: trace histogram [134, 133, 1, 1] [2018-10-01 01:16:20,275 INFO L423 AbstractCegarLoop]: === Iteration 134 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:16:20,275 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:16:20,275 INFO L82 PathProgramCache]: Analyzing trace with hash -1635787222, now seen corresponding path program 133 times [2018-10-01 01:16:20,276 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:16:20,276 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:16:20,276 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:16:20,276 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:16:20,276 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:16:20,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:16:21,332 INFO L134 CoverageAnalysis]: Checked inductivity of 17822 backedges. 0 proven. 17822 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:16:21,332 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:16:21,332 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 134 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 134 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:16:21,340 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:16:21,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:16:21,411 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:16:24,037 INFO L134 CoverageAnalysis]: Checked inductivity of 17822 backedges. 0 proven. 17822 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:16:24,057 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:16:24,057 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [134, 134] total 268 [2018-10-01 01:16:24,058 INFO L459 AbstractCegarLoop]: Interpolant automaton has 270 states [2018-10-01 01:16:24,064 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 270 interpolants. [2018-10-01 01:16:24,064 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:16:24,064 INFO L87 Difference]: Start difference. First operand 270 states and 270 transitions. Second operand 270 states. [2018-10-01 01:16:27,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:16:27,096 INFO L93 Difference]: Finished difference Result 273 states and 273 transitions. [2018-10-01 01:16:27,097 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 136 states. [2018-10-01 01:16:27,097 INFO L78 Accepts]: Start accepts. Automaton has 270 states. Word has length 269 [2018-10-01 01:16:27,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:16:27,097 INFO L225 Difference]: With dead ends: 273 [2018-10-01 01:16:27,098 INFO L226 Difference]: Without dead ends: 272 [2018-10-01 01:16:27,098 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 402 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 268 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.3s Time [2018-10-01 01:16:27,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states. [2018-10-01 01:16:27,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 272. [2018-10-01 01:16:27,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 272 states. [2018-10-01 01:16:27,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 272 states and 272 transitions. [2018-10-01 01:16:27,102 INFO L78 Accepts]: Start accepts. Automaton has 272 states and 272 transitions. Word has length 269 [2018-10-01 01:16:27,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:16:27,102 INFO L480 AbstractCegarLoop]: Abstraction has 272 states and 272 transitions. [2018-10-01 01:16:27,103 INFO L481 AbstractCegarLoop]: Interpolant automaton has 270 states. [2018-10-01 01:16:27,103 INFO L276 IsEmpty]: Start isEmpty. Operand 272 states and 272 transitions. [2018-10-01 01:16:27,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2018-10-01 01:16:27,103 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:16:27,103 INFO L375 BasicCegarLoop]: trace histogram [135, 134, 1, 1] [2018-10-01 01:16:27,104 INFO L423 AbstractCegarLoop]: === Iteration 135 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:16:27,104 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:16:27,104 INFO L82 PathProgramCache]: Analyzing trace with hash -33488916, now seen corresponding path program 134 times [2018-10-01 01:16:27,104 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:16:27,104 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:16:27,104 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:16:27,105 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:16:27,105 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:16:27,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:16:28,138 INFO L134 CoverageAnalysis]: Checked inductivity of 18090 backedges. 0 proven. 18090 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:16:28,138 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:16:28,138 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 135 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 135 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:16:28,146 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 01:16:28,214 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 01:16:28,214 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:16:28,219 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:16:30,996 INFO L134 CoverageAnalysis]: Checked inductivity of 18090 backedges. 0 proven. 18090 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:16:31,016 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:16:31,017 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [135, 135] total 270 [2018-10-01 01:16:31,017 INFO L459 AbstractCegarLoop]: Interpolant automaton has 272 states [2018-10-01 01:16:31,021 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 272 interpolants. [2018-10-01 01:16:31,021 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:16:31,022 INFO L87 Difference]: Start difference. First operand 272 states and 272 transitions. Second operand 272 states. [2018-10-01 01:16:33,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:16:33,940 INFO L93 Difference]: Finished difference Result 275 states and 275 transitions. [2018-10-01 01:16:33,940 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 137 states. [2018-10-01 01:16:33,940 INFO L78 Accepts]: Start accepts. Automaton has 272 states. Word has length 271 [2018-10-01 01:16:33,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:16:33,941 INFO L225 Difference]: With dead ends: 275 [2018-10-01 01:16:33,941 INFO L226 Difference]: Without dead ends: 274 [2018-10-01 01:16:33,941 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 405 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 270 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.4s Time [2018-10-01 01:16:33,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274 states. [2018-10-01 01:16:33,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274 to 274. [2018-10-01 01:16:33,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 274 states. [2018-10-01 01:16:33,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 274 transitions. [2018-10-01 01:16:33,948 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 274 transitions. Word has length 271 [2018-10-01 01:16:33,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:16:33,948 INFO L480 AbstractCegarLoop]: Abstraction has 274 states and 274 transitions. [2018-10-01 01:16:33,948 INFO L481 AbstractCegarLoop]: Interpolant automaton has 272 states. [2018-10-01 01:16:33,948 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 274 transitions. [2018-10-01 01:16:33,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 274 [2018-10-01 01:16:33,949 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:16:33,950 INFO L375 BasicCegarLoop]: trace histogram [136, 135, 1, 1] [2018-10-01 01:16:33,950 INFO L423 AbstractCegarLoop]: === Iteration 136 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:16:33,950 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:16:33,950 INFO L82 PathProgramCache]: Analyzing trace with hash -2118076114, now seen corresponding path program 135 times [2018-10-01 01:16:33,950 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:16:33,950 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:16:33,951 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:16:33,951 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:16:33,951 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:16:34,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:16:35,137 INFO L134 CoverageAnalysis]: Checked inductivity of 18360 backedges. 0 proven. 18360 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:16:35,137 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:16:35,137 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 136 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 136 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:16:35,144 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 01:16:35,387 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 136 check-sat command(s) [2018-10-01 01:16:35,387 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:16:35,393 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:16:38,311 INFO L134 CoverageAnalysis]: Checked inductivity of 18360 backedges. 0 proven. 18360 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:16:38,331 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:16:38,332 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [136, 136] total 272 [2018-10-01 01:16:38,332 INFO L459 AbstractCegarLoop]: Interpolant automaton has 274 states [2018-10-01 01:16:38,336 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 274 interpolants. [2018-10-01 01:16:38,336 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:16:38,337 INFO L87 Difference]: Start difference. First operand 274 states and 274 transitions. Second operand 274 states. [2018-10-01 01:16:41,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:16:41,346 INFO L93 Difference]: Finished difference Result 277 states and 277 transitions. [2018-10-01 01:16:41,346 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 138 states. [2018-10-01 01:16:41,346 INFO L78 Accepts]: Start accepts. Automaton has 274 states. Word has length 273 [2018-10-01 01:16:41,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:16:41,347 INFO L225 Difference]: With dead ends: 277 [2018-10-01 01:16:41,347 INFO L226 Difference]: Without dead ends: 276 [2018-10-01 01:16:41,347 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 408 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 272 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.7s Time [2018-10-01 01:16:41,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 276 states. [2018-10-01 01:16:41,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 276 to 276. [2018-10-01 01:16:41,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 276 states. [2018-10-01 01:16:41,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 276 states to 276 states and 276 transitions. [2018-10-01 01:16:41,352 INFO L78 Accepts]: Start accepts. Automaton has 276 states and 276 transitions. Word has length 273 [2018-10-01 01:16:41,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:16:41,352 INFO L480 AbstractCegarLoop]: Abstraction has 276 states and 276 transitions. [2018-10-01 01:16:41,352 INFO L481 AbstractCegarLoop]: Interpolant automaton has 274 states. [2018-10-01 01:16:41,352 INFO L276 IsEmpty]: Start isEmpty. Operand 276 states and 276 transitions. [2018-10-01 01:16:41,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 276 [2018-10-01 01:16:41,353 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:16:41,353 INFO L375 BasicCegarLoop]: trace histogram [137, 136, 1, 1] [2018-10-01 01:16:41,353 INFO L423 AbstractCegarLoop]: === Iteration 137 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:16:41,353 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:16:41,354 INFO L82 PathProgramCache]: Analyzing trace with hash 343353840, now seen corresponding path program 136 times [2018-10-01 01:16:41,354 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:16:41,354 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:16:41,354 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:16:41,354 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:16:41,354 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:16:41,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:16:42,431 INFO L134 CoverageAnalysis]: Checked inductivity of 18632 backedges. 0 proven. 18632 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:16:42,431 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:16:42,431 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 137 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 137 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:16:42,438 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 01:16:42,519 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 01:16:42,520 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:16:42,525 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:16:45,390 INFO L134 CoverageAnalysis]: Checked inductivity of 18632 backedges. 0 proven. 18632 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:16:45,410 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:16:45,410 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [137, 137] total 274 [2018-10-01 01:16:45,410 INFO L459 AbstractCegarLoop]: Interpolant automaton has 276 states [2018-10-01 01:16:45,415 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 276 interpolants. [2018-10-01 01:16:45,415 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:16:45,415 INFO L87 Difference]: Start difference. First operand 276 states and 276 transitions. Second operand 276 states. [2018-10-01 01:16:48,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:16:48,935 INFO L93 Difference]: Finished difference Result 279 states and 279 transitions. [2018-10-01 01:16:48,935 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 139 states. [2018-10-01 01:16:48,935 INFO L78 Accepts]: Start accepts. Automaton has 276 states. Word has length 275 [2018-10-01 01:16:48,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:16:48,936 INFO L225 Difference]: With dead ends: 279 [2018-10-01 01:16:48,936 INFO L226 Difference]: Without dead ends: 278 [2018-10-01 01:16:48,936 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 411 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 274 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.5s Time [2018-10-01 01:16:48,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2018-10-01 01:16:48,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 278. [2018-10-01 01:16:48,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 278 states. [2018-10-01 01:16:48,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 278 transitions. [2018-10-01 01:16:48,941 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 278 transitions. Word has length 275 [2018-10-01 01:16:48,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:16:48,941 INFO L480 AbstractCegarLoop]: Abstraction has 278 states and 278 transitions. [2018-10-01 01:16:48,941 INFO L481 AbstractCegarLoop]: Interpolant automaton has 276 states. [2018-10-01 01:16:48,941 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 278 transitions. [2018-10-01 01:16:48,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 278 [2018-10-01 01:16:48,942 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:16:48,942 INFO L375 BasicCegarLoop]: trace histogram [138, 137, 1, 1] [2018-10-01 01:16:48,942 INFO L423 AbstractCegarLoop]: === Iteration 138 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:16:48,942 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:16:48,942 INFO L82 PathProgramCache]: Analyzing trace with hash -749440462, now seen corresponding path program 137 times [2018-10-01 01:16:48,942 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:16:48,943 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:16:48,943 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:16:48,943 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:16:48,943 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:16:49,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:16:50,022 INFO L134 CoverageAnalysis]: Checked inductivity of 18906 backedges. 0 proven. 18906 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:16:50,022 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:16:50,022 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 138 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 138 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:16:50,029 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 01:16:50,279 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 138 check-sat command(s) [2018-10-01 01:16:50,279 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:16:50,292 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:16:53,174 INFO L134 CoverageAnalysis]: Checked inductivity of 18906 backedges. 0 proven. 18906 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:16:53,194 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:16:53,195 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [138, 138] total 276 [2018-10-01 01:16:53,195 INFO L459 AbstractCegarLoop]: Interpolant automaton has 278 states [2018-10-01 01:16:53,199 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 278 interpolants. [2018-10-01 01:16:53,199 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:16:53,199 INFO L87 Difference]: Start difference. First operand 278 states and 278 transitions. Second operand 278 states. [2018-10-01 01:16:56,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:16:56,147 INFO L93 Difference]: Finished difference Result 281 states and 281 transitions. [2018-10-01 01:16:56,147 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 140 states. [2018-10-01 01:16:56,147 INFO L78 Accepts]: Start accepts. Automaton has 278 states. Word has length 277 [2018-10-01 01:16:56,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:16:56,147 INFO L225 Difference]: With dead ends: 281 [2018-10-01 01:16:56,148 INFO L226 Difference]: Without dead ends: 280 [2018-10-01 01:16:56,148 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 414 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 276 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.5s Time [2018-10-01 01:16:56,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280 states. [2018-10-01 01:16:56,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280 to 280. [2018-10-01 01:16:56,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 280 states. [2018-10-01 01:16:56,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 280 states to 280 states and 280 transitions. [2018-10-01 01:16:56,152 INFO L78 Accepts]: Start accepts. Automaton has 280 states and 280 transitions. Word has length 277 [2018-10-01 01:16:56,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:16:56,153 INFO L480 AbstractCegarLoop]: Abstraction has 280 states and 280 transitions. [2018-10-01 01:16:56,153 INFO L481 AbstractCegarLoop]: Interpolant automaton has 278 states. [2018-10-01 01:16:56,153 INFO L276 IsEmpty]: Start isEmpty. Operand 280 states and 280 transitions. [2018-10-01 01:16:56,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 280 [2018-10-01 01:16:56,153 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:16:56,154 INFO L375 BasicCegarLoop]: trace histogram [139, 138, 1, 1] [2018-10-01 01:16:56,154 INFO L423 AbstractCegarLoop]: === Iteration 139 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:16:56,154 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:16:56,154 INFO L82 PathProgramCache]: Analyzing trace with hash 1342222836, now seen corresponding path program 138 times [2018-10-01 01:16:56,154 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:16:56,154 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:16:56,154 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:16:56,155 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:16:56,155 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:16:56,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:16:57,229 INFO L134 CoverageAnalysis]: Checked inductivity of 19182 backedges. 0 proven. 19182 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:16:57,230 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:16:57,230 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 139 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 139 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:16:57,236 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 01:16:57,451 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 139 check-sat command(s) [2018-10-01 01:16:57,452 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:16:57,457 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:17:00,296 INFO L134 CoverageAnalysis]: Checked inductivity of 19182 backedges. 0 proven. 19182 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:17:00,316 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:17:00,316 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [139, 139] total 278 [2018-10-01 01:17:00,317 INFO L459 AbstractCegarLoop]: Interpolant automaton has 280 states [2018-10-01 01:17:00,321 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 280 interpolants. [2018-10-01 01:17:00,321 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:17:00,321 INFO L87 Difference]: Start difference. First operand 280 states and 280 transitions. Second operand 280 states. [2018-10-01 01:17:03,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:17:03,365 INFO L93 Difference]: Finished difference Result 283 states and 283 transitions. [2018-10-01 01:17:03,365 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 141 states. [2018-10-01 01:17:03,365 INFO L78 Accepts]: Start accepts. Automaton has 280 states. Word has length 279 [2018-10-01 01:17:03,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:17:03,365 INFO L225 Difference]: With dead ends: 283 [2018-10-01 01:17:03,366 INFO L226 Difference]: Without dead ends: 282 [2018-10-01 01:17:03,366 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 417 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 278 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.5s Time [2018-10-01 01:17:03,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2018-10-01 01:17:03,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 282. [2018-10-01 01:17:03,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 282 states. [2018-10-01 01:17:03,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282 states to 282 states and 282 transitions. [2018-10-01 01:17:03,371 INFO L78 Accepts]: Start accepts. Automaton has 282 states and 282 transitions. Word has length 279 [2018-10-01 01:17:03,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:17:03,372 INFO L480 AbstractCegarLoop]: Abstraction has 282 states and 282 transitions. [2018-10-01 01:17:03,372 INFO L481 AbstractCegarLoop]: Interpolant automaton has 280 states. [2018-10-01 01:17:03,372 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 282 transitions. [2018-10-01 01:17:03,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 282 [2018-10-01 01:17:03,373 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:17:03,373 INFO L375 BasicCegarLoop]: trace histogram [140, 139, 1, 1] [2018-10-01 01:17:03,373 INFO L423 AbstractCegarLoop]: === Iteration 140 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:17:03,373 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:17:03,373 INFO L82 PathProgramCache]: Analyzing trace with hash 1385957686, now seen corresponding path program 139 times [2018-10-01 01:17:03,373 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:17:03,373 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:17:03,374 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:17:03,374 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:17:03,374 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:17:03,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:17:04,452 INFO L134 CoverageAnalysis]: Checked inductivity of 19460 backedges. 0 proven. 19460 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:17:04,452 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:17:04,452 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 140 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 140 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:17:04,475 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:17:04,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:17:04,549 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:17:07,510 INFO L134 CoverageAnalysis]: Checked inductivity of 19460 backedges. 0 proven. 19460 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:17:07,530 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:17:07,530 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [140, 140] total 280 [2018-10-01 01:17:07,531 INFO L459 AbstractCegarLoop]: Interpolant automaton has 282 states [2018-10-01 01:17:07,535 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 282 interpolants. [2018-10-01 01:17:07,535 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:17:07,536 INFO L87 Difference]: Start difference. First operand 282 states and 282 transitions. Second operand 282 states. [2018-10-01 01:17:10,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:17:10,984 INFO L93 Difference]: Finished difference Result 285 states and 285 transitions. [2018-10-01 01:17:10,984 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 142 states. [2018-10-01 01:17:10,984 INFO L78 Accepts]: Start accepts. Automaton has 282 states. Word has length 281 [2018-10-01 01:17:10,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:17:10,985 INFO L225 Difference]: With dead ends: 285 [2018-10-01 01:17:10,985 INFO L226 Difference]: Without dead ends: 284 [2018-10-01 01:17:10,985 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 420 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 280 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.6s Time [2018-10-01 01:17:10,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284 states. [2018-10-01 01:17:10,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284 to 284. [2018-10-01 01:17:10,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 284 states. [2018-10-01 01:17:10,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 284 states to 284 states and 284 transitions. [2018-10-01 01:17:10,990 INFO L78 Accepts]: Start accepts. Automaton has 284 states and 284 transitions. Word has length 281 [2018-10-01 01:17:10,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:17:10,990 INFO L480 AbstractCegarLoop]: Abstraction has 284 states and 284 transitions. [2018-10-01 01:17:10,990 INFO L481 AbstractCegarLoop]: Interpolant automaton has 282 states. [2018-10-01 01:17:10,990 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states and 284 transitions. [2018-10-01 01:17:10,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 284 [2018-10-01 01:17:10,991 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:17:10,991 INFO L375 BasicCegarLoop]: trace histogram [141, 140, 1, 1] [2018-10-01 01:17:10,991 INFO L423 AbstractCegarLoop]: === Iteration 141 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:17:10,991 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:17:10,991 INFO L82 PathProgramCache]: Analyzing trace with hash 465475576, now seen corresponding path program 140 times [2018-10-01 01:17:10,991 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:17:10,992 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:17:10,992 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:17:10,992 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:17:10,992 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:17:11,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:17:12,094 INFO L134 CoverageAnalysis]: Checked inductivity of 19740 backedges. 0 proven. 19740 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:17:12,094 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:17:12,094 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 141 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 141 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:17:12,101 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 01:17:12,172 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 01:17:12,172 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:17:12,176 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:17:15,153 INFO L134 CoverageAnalysis]: Checked inductivity of 19740 backedges. 0 proven. 19740 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:17:15,173 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:17:15,173 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [141, 141] total 282 [2018-10-01 01:17:15,173 INFO L459 AbstractCegarLoop]: Interpolant automaton has 284 states [2018-10-01 01:17:15,178 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 284 interpolants. [2018-10-01 01:17:15,178 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:17:15,178 INFO L87 Difference]: Start difference. First operand 284 states and 284 transitions. Second operand 284 states. [2018-10-01 01:17:18,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:17:18,149 INFO L93 Difference]: Finished difference Result 287 states and 287 transitions. [2018-10-01 01:17:18,149 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 143 states. [2018-10-01 01:17:18,149 INFO L78 Accepts]: Start accepts. Automaton has 284 states. Word has length 283 [2018-10-01 01:17:18,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:17:18,150 INFO L225 Difference]: With dead ends: 287 [2018-10-01 01:17:18,150 INFO L226 Difference]: Without dead ends: 286 [2018-10-01 01:17:18,150 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 423 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 282 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.6s Time [2018-10-01 01:17:18,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286 states. [2018-10-01 01:17:18,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 286 to 286. [2018-10-01 01:17:18,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 286 states. [2018-10-01 01:17:18,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 286 states to 286 states and 286 transitions. [2018-10-01 01:17:18,156 INFO L78 Accepts]: Start accepts. Automaton has 286 states and 286 transitions. Word has length 283 [2018-10-01 01:17:18,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:17:18,157 INFO L480 AbstractCegarLoop]: Abstraction has 286 states and 286 transitions. [2018-10-01 01:17:18,157 INFO L481 AbstractCegarLoop]: Interpolant automaton has 284 states. [2018-10-01 01:17:18,157 INFO L276 IsEmpty]: Start isEmpty. Operand 286 states and 286 transitions. [2018-10-01 01:17:18,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 286 [2018-10-01 01:17:18,158 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:17:18,158 INFO L375 BasicCegarLoop]: trace histogram [142, 141, 1, 1] [2018-10-01 01:17:18,158 INFO L423 AbstractCegarLoop]: === Iteration 142 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:17:18,158 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:17:18,158 INFO L82 PathProgramCache]: Analyzing trace with hash 645430842, now seen corresponding path program 141 times [2018-10-01 01:17:18,158 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:17:18,158 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:17:18,159 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:17:18,159 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:17:18,159 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:17:18,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:17:19,302 INFO L134 CoverageAnalysis]: Checked inductivity of 20022 backedges. 0 proven. 20022 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:17:19,302 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:17:19,302 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 142 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 142 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:17:19,309 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 01:17:19,552 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 142 check-sat command(s) [2018-10-01 01:17:19,552 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:17:19,556 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:17:22,638 INFO L134 CoverageAnalysis]: Checked inductivity of 20022 backedges. 0 proven. 20022 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:17:22,658 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:17:22,659 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [142, 142] total 284 [2018-10-01 01:17:22,659 INFO L459 AbstractCegarLoop]: Interpolant automaton has 286 states [2018-10-01 01:17:22,664 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 286 interpolants. [2018-10-01 01:17:22,665 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:17:22,665 INFO L87 Difference]: Start difference. First operand 286 states and 286 transitions. Second operand 286 states. [2018-10-01 01:17:26,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:17:26,078 INFO L93 Difference]: Finished difference Result 289 states and 289 transitions. [2018-10-01 01:17:26,078 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 144 states. [2018-10-01 01:17:26,078 INFO L78 Accepts]: Start accepts. Automaton has 286 states. Word has length 285 [2018-10-01 01:17:26,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:17:26,078 INFO L225 Difference]: With dead ends: 289 [2018-10-01 01:17:26,079 INFO L226 Difference]: Without dead ends: 288 [2018-10-01 01:17:26,079 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 426 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 284 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.8s Time [2018-10-01 01:17:26,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 288 states. [2018-10-01 01:17:26,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 288 to 288. [2018-10-01 01:17:26,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 288 states. [2018-10-01 01:17:26,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 288 states to 288 states and 288 transitions. [2018-10-01 01:17:26,083 INFO L78 Accepts]: Start accepts. Automaton has 288 states and 288 transitions. Word has length 285 [2018-10-01 01:17:26,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:17:26,084 INFO L480 AbstractCegarLoop]: Abstraction has 288 states and 288 transitions. [2018-10-01 01:17:26,084 INFO L481 AbstractCegarLoop]: Interpolant automaton has 286 states. [2018-10-01 01:17:26,084 INFO L276 IsEmpty]: Start isEmpty. Operand 288 states and 288 transitions. [2018-10-01 01:17:26,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 288 [2018-10-01 01:17:26,084 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:17:26,084 INFO L375 BasicCegarLoop]: trace histogram [143, 142, 1, 1] [2018-10-01 01:17:26,085 INFO L423 AbstractCegarLoop]: === Iteration 143 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:17:26,085 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:17:26,085 INFO L82 PathProgramCache]: Analyzing trace with hash 1783749628, now seen corresponding path program 142 times [2018-10-01 01:17:26,085 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:17:26,085 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:17:26,085 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:17:26,085 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:17:26,086 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:17:26,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:17:27,244 INFO L134 CoverageAnalysis]: Checked inductivity of 20306 backedges. 0 proven. 20306 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:17:27,245 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:17:27,245 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 143 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 143 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:17:27,253 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 01:17:27,339 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 01:17:27,339 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:17:27,344 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:17:30,465 INFO L134 CoverageAnalysis]: Checked inductivity of 20306 backedges. 0 proven. 20306 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:17:30,485 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:17:30,486 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [143, 143] total 286 [2018-10-01 01:17:30,486 INFO L459 AbstractCegarLoop]: Interpolant automaton has 288 states [2018-10-01 01:17:30,490 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 288 interpolants. [2018-10-01 01:17:30,491 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:17:30,491 INFO L87 Difference]: Start difference. First operand 288 states and 288 transitions. Second operand 288 states. [2018-10-01 01:17:33,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:17:33,791 INFO L93 Difference]: Finished difference Result 291 states and 291 transitions. [2018-10-01 01:17:33,792 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 145 states. [2018-10-01 01:17:33,792 INFO L78 Accepts]: Start accepts. Automaton has 288 states. Word has length 287 [2018-10-01 01:17:33,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:17:33,792 INFO L225 Difference]: With dead ends: 291 [2018-10-01 01:17:33,792 INFO L226 Difference]: Without dead ends: 290 [2018-10-01 01:17:33,792 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 429 GetRequests, 143 SyntacticMatches, 0 SemanticMatches, 286 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.8s Time [2018-10-01 01:17:33,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290 states. [2018-10-01 01:17:33,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290 to 290. [2018-10-01 01:17:33,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 290 states. [2018-10-01 01:17:33,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 290 transitions. [2018-10-01 01:17:33,797 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 290 transitions. Word has length 287 [2018-10-01 01:17:33,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:17:33,797 INFO L480 AbstractCegarLoop]: Abstraction has 290 states and 290 transitions. [2018-10-01 01:17:33,797 INFO L481 AbstractCegarLoop]: Interpolant automaton has 288 states. [2018-10-01 01:17:33,798 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 290 transitions. [2018-10-01 01:17:33,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 290 [2018-10-01 01:17:33,798 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:17:33,798 INFO L375 BasicCegarLoop]: trace histogram [144, 143, 1, 1] [2018-10-01 01:17:33,799 INFO L423 AbstractCegarLoop]: === Iteration 144 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:17:33,799 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:17:33,799 INFO L82 PathProgramCache]: Analyzing trace with hash 491442494, now seen corresponding path program 143 times [2018-10-01 01:17:33,799 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:17:33,799 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:17:33,799 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:17:33,799 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:17:33,799 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:17:33,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:17:34,922 INFO L134 CoverageAnalysis]: Checked inductivity of 20592 backedges. 0 proven. 20592 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:17:34,923 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:17:34,923 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 144 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 144 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:17:34,930 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 01:17:35,198 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 144 check-sat command(s) [2018-10-01 01:17:35,198 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:17:35,207 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:17:38,354 INFO L134 CoverageAnalysis]: Checked inductivity of 20592 backedges. 0 proven. 20592 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:17:38,374 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:17:38,375 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [144, 144] total 288 [2018-10-01 01:17:38,375 INFO L459 AbstractCegarLoop]: Interpolant automaton has 290 states [2018-10-01 01:17:38,379 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 290 interpolants. [2018-10-01 01:17:38,380 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:17:38,380 INFO L87 Difference]: Start difference. First operand 290 states and 290 transitions. Second operand 290 states. [2018-10-01 01:17:42,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:17:42,018 INFO L93 Difference]: Finished difference Result 293 states and 293 transitions. [2018-10-01 01:17:42,019 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 146 states. [2018-10-01 01:17:42,019 INFO L78 Accepts]: Start accepts. Automaton has 290 states. Word has length 289 [2018-10-01 01:17:42,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:17:42,019 INFO L225 Difference]: With dead ends: 293 [2018-10-01 01:17:42,019 INFO L226 Difference]: Without dead ends: 292 [2018-10-01 01:17:42,020 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 432 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 288 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.8s Time [2018-10-01 01:17:42,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292 states. [2018-10-01 01:17:42,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292 to 292. [2018-10-01 01:17:42,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 292 states. [2018-10-01 01:17:42,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 292 states to 292 states and 292 transitions. [2018-10-01 01:17:42,026 INFO L78 Accepts]: Start accepts. Automaton has 292 states and 292 transitions. Word has length 289 [2018-10-01 01:17:42,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:17:42,026 INFO L480 AbstractCegarLoop]: Abstraction has 292 states and 292 transitions. [2018-10-01 01:17:42,026 INFO L481 AbstractCegarLoop]: Interpolant automaton has 290 states. [2018-10-01 01:17:42,026 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states and 292 transitions. [2018-10-01 01:17:42,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 292 [2018-10-01 01:17:42,027 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:17:42,027 INFO L375 BasicCegarLoop]: trace histogram [145, 144, 1, 1] [2018-10-01 01:17:42,027 INFO L423 AbstractCegarLoop]: === Iteration 145 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:17:42,027 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:17:42,028 INFO L82 PathProgramCache]: Analyzing trace with hash -170164736, now seen corresponding path program 144 times [2018-10-01 01:17:42,028 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:17:42,028 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:17:42,028 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:17:42,028 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:17:42,028 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:17:42,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:17:43,184 INFO L134 CoverageAnalysis]: Checked inductivity of 20880 backedges. 0 proven. 20880 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:17:43,184 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:17:43,184 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 145 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 145 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:17:43,191 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 01:17:43,415 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 145 check-sat command(s) [2018-10-01 01:17:43,416 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:17:43,421 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:17:46,619 INFO L134 CoverageAnalysis]: Checked inductivity of 20880 backedges. 0 proven. 20880 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:17:46,639 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:17:46,640 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [145, 145] total 290 [2018-10-01 01:17:46,640 INFO L459 AbstractCegarLoop]: Interpolant automaton has 292 states [2018-10-01 01:17:46,644 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 292 interpolants. [2018-10-01 01:17:46,644 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:17:46,645 INFO L87 Difference]: Start difference. First operand 292 states and 292 transitions. Second operand 292 states. [2018-10-01 01:17:50,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:17:50,166 INFO L93 Difference]: Finished difference Result 295 states and 295 transitions. [2018-10-01 01:17:50,167 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 147 states. [2018-10-01 01:17:50,167 INFO L78 Accepts]: Start accepts. Automaton has 292 states. Word has length 291 [2018-10-01 01:17:50,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:17:50,167 INFO L225 Difference]: With dead ends: 295 [2018-10-01 01:17:50,167 INFO L226 Difference]: Without dead ends: 294 [2018-10-01 01:17:50,168 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 435 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 290 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.9s Time [2018-10-01 01:17:50,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294 states. [2018-10-01 01:17:50,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294 to 294. [2018-10-01 01:17:50,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 294 states. [2018-10-01 01:17:50,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 294 transitions. [2018-10-01 01:17:50,173 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 294 transitions. Word has length 291 [2018-10-01 01:17:50,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:17:50,173 INFO L480 AbstractCegarLoop]: Abstraction has 294 states and 294 transitions. [2018-10-01 01:17:50,173 INFO L481 AbstractCegarLoop]: Interpolant automaton has 292 states. [2018-10-01 01:17:50,173 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 294 transitions. [2018-10-01 01:17:50,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 294 [2018-10-01 01:17:50,174 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:17:50,174 INFO L375 BasicCegarLoop]: trace histogram [146, 145, 1, 1] [2018-10-01 01:17:50,174 INFO L423 AbstractCegarLoop]: === Iteration 146 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:17:50,174 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:17:50,174 INFO L82 PathProgramCache]: Analyzing trace with hash -319552958, now seen corresponding path program 145 times [2018-10-01 01:17:50,174 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:17:50,174 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:17:50,175 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:17:50,175 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:17:50,175 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:17:50,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:17:51,343 INFO L134 CoverageAnalysis]: Checked inductivity of 21170 backedges. 0 proven. 21170 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:17:51,343 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:17:51,343 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 146 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 146 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:17:51,351 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:17:51,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:17:51,430 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:17:54,761 INFO L134 CoverageAnalysis]: Checked inductivity of 21170 backedges. 0 proven. 21170 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:17:54,781 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:17:54,781 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [146, 146] total 292 [2018-10-01 01:17:54,782 INFO L459 AbstractCegarLoop]: Interpolant automaton has 294 states [2018-10-01 01:17:54,787 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 294 interpolants. [2018-10-01 01:17:54,787 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:17:54,787 INFO L87 Difference]: Start difference. First operand 294 states and 294 transitions. Second operand 294 states. [2018-10-01 01:17:58,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:17:58,691 INFO L93 Difference]: Finished difference Result 297 states and 297 transitions. [2018-10-01 01:17:58,692 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 148 states. [2018-10-01 01:17:58,692 INFO L78 Accepts]: Start accepts. Automaton has 294 states. Word has length 293 [2018-10-01 01:17:58,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:17:58,692 INFO L225 Difference]: With dead ends: 297 [2018-10-01 01:17:58,692 INFO L226 Difference]: Without dead ends: 296 [2018-10-01 01:17:58,693 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 438 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 292 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.0s Time [2018-10-01 01:17:58,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 296 states. [2018-10-01 01:17:58,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 296 to 296. [2018-10-01 01:17:58,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 296 states. [2018-10-01 01:17:58,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 296 states to 296 states and 296 transitions. [2018-10-01 01:17:58,697 INFO L78 Accepts]: Start accepts. Automaton has 296 states and 296 transitions. Word has length 293 [2018-10-01 01:17:58,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:17:58,698 INFO L480 AbstractCegarLoop]: Abstraction has 296 states and 296 transitions. [2018-10-01 01:17:58,698 INFO L481 AbstractCegarLoop]: Interpolant automaton has 294 states. [2018-10-01 01:17:58,698 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states and 296 transitions. [2018-10-01 01:17:58,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 296 [2018-10-01 01:17:58,698 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:17:58,699 INFO L375 BasicCegarLoop]: trace histogram [147, 146, 1, 1] [2018-10-01 01:17:58,699 INFO L423 AbstractCegarLoop]: === Iteration 147 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:17:58,699 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:17:58,699 INFO L82 PathProgramCache]: Analyzing trace with hash 2147253764, now seen corresponding path program 146 times [2018-10-01 01:17:58,699 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:17:58,699 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:17:58,699 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:17:58,700 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:17:58,700 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:17:58,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:17:59,858 INFO L134 CoverageAnalysis]: Checked inductivity of 21462 backedges. 0 proven. 21462 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:17:59,858 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:17:59,859 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 147 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 147 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:17:59,865 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 01:17:59,941 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 01:17:59,942 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:17:59,946 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:18:03,149 INFO L134 CoverageAnalysis]: Checked inductivity of 21462 backedges. 0 proven. 21462 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:18:03,169 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:18:03,169 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [147, 147] total 294 [2018-10-01 01:18:03,169 INFO L459 AbstractCegarLoop]: Interpolant automaton has 296 states [2018-10-01 01:18:03,174 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 296 interpolants. [2018-10-01 01:18:03,174 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:18:03,174 INFO L87 Difference]: Start difference. First operand 296 states and 296 transitions. Second operand 296 states. [2018-10-01 01:18:06,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:18:06,607 INFO L93 Difference]: Finished difference Result 299 states and 299 transitions. [2018-10-01 01:18:06,607 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 149 states. [2018-10-01 01:18:06,608 INFO L78 Accepts]: Start accepts. Automaton has 296 states. Word has length 295 [2018-10-01 01:18:06,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:18:06,608 INFO L225 Difference]: With dead ends: 299 [2018-10-01 01:18:06,609 INFO L226 Difference]: Without dead ends: 298 [2018-10-01 01:18:06,609 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 441 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 294 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.9s Time [2018-10-01 01:18:06,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2018-10-01 01:18:06,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 298. [2018-10-01 01:18:06,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 298 states. [2018-10-01 01:18:06,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 298 transitions. [2018-10-01 01:18:06,616 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 298 transitions. Word has length 295 [2018-10-01 01:18:06,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:18:06,617 INFO L480 AbstractCegarLoop]: Abstraction has 298 states and 298 transitions. [2018-10-01 01:18:06,617 INFO L481 AbstractCegarLoop]: Interpolant automaton has 296 states. [2018-10-01 01:18:06,617 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 298 transitions. [2018-10-01 01:18:06,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 298 [2018-10-01 01:18:06,618 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:18:06,618 INFO L375 BasicCegarLoop]: trace histogram [148, 147, 1, 1] [2018-10-01 01:18:06,618 INFO L423 AbstractCegarLoop]: === Iteration 148 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:18:06,619 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:18:06,619 INFO L82 PathProgramCache]: Analyzing trace with hash 1926566214, now seen corresponding path program 147 times [2018-10-01 01:18:06,619 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:18:06,619 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:18:06,619 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:18:06,620 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:18:06,620 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:18:06,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:18:07,968 INFO L134 CoverageAnalysis]: Checked inductivity of 21756 backedges. 0 proven. 21756 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:18:07,969 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:18:07,969 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 148 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 148 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:18:07,977 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 01:18:08,234 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 148 check-sat command(s) [2018-10-01 01:18:08,235 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:18:08,239 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:18:11,494 INFO L134 CoverageAnalysis]: Checked inductivity of 21756 backedges. 0 proven. 21756 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:18:11,514 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:18:11,514 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [148, 148] total 296 [2018-10-01 01:18:11,515 INFO L459 AbstractCegarLoop]: Interpolant automaton has 298 states [2018-10-01 01:18:11,520 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 298 interpolants. [2018-10-01 01:18:11,520 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:18:11,520 INFO L87 Difference]: Start difference. First operand 298 states and 298 transitions. Second operand 298 states. [2018-10-01 01:18:15,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:18:15,608 INFO L93 Difference]: Finished difference Result 301 states and 301 transitions. [2018-10-01 01:18:15,609 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 150 states. [2018-10-01 01:18:15,609 INFO L78 Accepts]: Start accepts. Automaton has 298 states. Word has length 297 [2018-10-01 01:18:15,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:18:15,609 INFO L225 Difference]: With dead ends: 301 [2018-10-01 01:18:15,609 INFO L226 Difference]: Without dead ends: 300 [2018-10-01 01:18:15,610 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 444 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 296 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.1s Time [2018-10-01 01:18:15,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 300 states. [2018-10-01 01:18:15,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 300 to 300. [2018-10-01 01:18:15,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 300 states. [2018-10-01 01:18:15,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 300 states to 300 states and 300 transitions. [2018-10-01 01:18:15,616 INFO L78 Accepts]: Start accepts. Automaton has 300 states and 300 transitions. Word has length 297 [2018-10-01 01:18:15,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:18:15,616 INFO L480 AbstractCegarLoop]: Abstraction has 300 states and 300 transitions. [2018-10-01 01:18:15,616 INFO L481 AbstractCegarLoop]: Interpolant automaton has 298 states. [2018-10-01 01:18:15,616 INFO L276 IsEmpty]: Start isEmpty. Operand 300 states and 300 transitions. [2018-10-01 01:18:15,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 300 [2018-10-01 01:18:15,617 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:18:15,617 INFO L375 BasicCegarLoop]: trace histogram [149, 148, 1, 1] [2018-10-01 01:18:15,617 INFO L423 AbstractCegarLoop]: === Iteration 149 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:18:15,617 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:18:15,617 INFO L82 PathProgramCache]: Analyzing trace with hash 299228168, now seen corresponding path program 148 times [2018-10-01 01:18:15,617 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:18:15,617 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:18:15,618 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:18:15,618 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:18:15,618 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:18:15,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:18:16,835 INFO L134 CoverageAnalysis]: Checked inductivity of 22052 backedges. 0 proven. 22052 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:18:16,835 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:18:16,835 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 149 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 149 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:18:16,843 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 01:18:16,934 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 01:18:16,934 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:18:16,939 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:18:20,342 INFO L134 CoverageAnalysis]: Checked inductivity of 22052 backedges. 0 proven. 22052 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:18:20,362 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:18:20,362 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [149, 149] total 298 [2018-10-01 01:18:20,363 INFO L459 AbstractCegarLoop]: Interpolant automaton has 300 states [2018-10-01 01:18:20,368 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 300 interpolants. [2018-10-01 01:18:20,368 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:18:20,368 INFO L87 Difference]: Start difference. First operand 300 states and 300 transitions. Second operand 300 states. [2018-10-01 01:18:23,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:18:23,944 INFO L93 Difference]: Finished difference Result 303 states and 303 transitions. [2018-10-01 01:18:23,944 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 151 states. [2018-10-01 01:18:23,944 INFO L78 Accepts]: Start accepts. Automaton has 300 states. Word has length 299 [2018-10-01 01:18:23,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:18:23,945 INFO L225 Difference]: With dead ends: 303 [2018-10-01 01:18:23,945 INFO L226 Difference]: Without dead ends: 302 [2018-10-01 01:18:23,945 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 447 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 298 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.1s Time [2018-10-01 01:18:23,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 302 states. [2018-10-01 01:18:23,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 302 to 302. [2018-10-01 01:18:23,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 302 states. [2018-10-01 01:18:23,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 302 states to 302 states and 302 transitions. [2018-10-01 01:18:23,950 INFO L78 Accepts]: Start accepts. Automaton has 302 states and 302 transitions. Word has length 299 [2018-10-01 01:18:23,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:18:23,950 INFO L480 AbstractCegarLoop]: Abstraction has 302 states and 302 transitions. [2018-10-01 01:18:23,950 INFO L481 AbstractCegarLoop]: Interpolant automaton has 300 states. [2018-10-01 01:18:23,950 INFO L276 IsEmpty]: Start isEmpty. Operand 302 states and 302 transitions. [2018-10-01 01:18:23,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 302 [2018-10-01 01:18:23,951 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:18:23,951 INFO L375 BasicCegarLoop]: trace histogram [150, 149, 1, 1] [2018-10-01 01:18:23,951 INFO L423 AbstractCegarLoop]: === Iteration 150 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:18:23,951 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:18:23,952 INFO L82 PathProgramCache]: Analyzing trace with hash -204538294, now seen corresponding path program 149 times [2018-10-01 01:18:23,952 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:18:23,952 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:18:23,952 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:18:23,952 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:18:23,952 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:18:24,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:18:25,178 INFO L134 CoverageAnalysis]: Checked inductivity of 22350 backedges. 0 proven. 22350 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:18:25,178 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:18:25,178 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 150 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 150 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:18:25,185 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 01:18:25,472 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 150 check-sat command(s) [2018-10-01 01:18:25,472 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:18:25,481 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:18:28,796 INFO L134 CoverageAnalysis]: Checked inductivity of 22350 backedges. 0 proven. 22350 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:18:28,816 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:18:28,817 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [150, 150] total 300 [2018-10-01 01:18:28,817 INFO L459 AbstractCegarLoop]: Interpolant automaton has 302 states [2018-10-01 01:18:28,822 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 302 interpolants. [2018-10-01 01:18:28,822 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:18:28,822 INFO L87 Difference]: Start difference. First operand 302 states and 302 transitions. Second operand 302 states. [2018-10-01 01:18:32,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:18:32,289 INFO L93 Difference]: Finished difference Result 305 states and 305 transitions. [2018-10-01 01:18:32,289 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 152 states. [2018-10-01 01:18:32,289 INFO L78 Accepts]: Start accepts. Automaton has 302 states. Word has length 301 [2018-10-01 01:18:32,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:18:32,290 INFO L225 Difference]: With dead ends: 305 [2018-10-01 01:18:32,290 INFO L226 Difference]: Without dead ends: 304 [2018-10-01 01:18:32,290 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 450 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 300 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.0s Time [2018-10-01 01:18:32,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2018-10-01 01:18:32,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 304. [2018-10-01 01:18:32,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 304 states. [2018-10-01 01:18:32,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 304 transitions. [2018-10-01 01:18:32,297 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 304 transitions. Word has length 301 [2018-10-01 01:18:32,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:18:32,297 INFO L480 AbstractCegarLoop]: Abstraction has 304 states and 304 transitions. [2018-10-01 01:18:32,298 INFO L481 AbstractCegarLoop]: Interpolant automaton has 302 states. [2018-10-01 01:18:32,298 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 304 transitions. [2018-10-01 01:18:32,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 304 [2018-10-01 01:18:32,299 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:18:32,299 INFO L375 BasicCegarLoop]: trace histogram [151, 150, 1, 1] [2018-10-01 01:18:32,299 INFO L423 AbstractCegarLoop]: === Iteration 151 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:18:32,299 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:18:32,299 INFO L82 PathProgramCache]: Analyzing trace with hash 1007196172, now seen corresponding path program 150 times [2018-10-01 01:18:32,299 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:18:32,300 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:18:32,300 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:18:32,300 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:18:32,300 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:18:32,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:18:33,572 INFO L134 CoverageAnalysis]: Checked inductivity of 22650 backedges. 0 proven. 22650 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:18:33,572 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:18:33,572 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 151 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 151 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:18:33,578 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 01:18:33,818 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 151 check-sat command(s) [2018-10-01 01:18:33,818 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:18:33,823 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:18:37,217 INFO L134 CoverageAnalysis]: Checked inductivity of 22650 backedges. 0 proven. 22650 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:18:37,238 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:18:37,238 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [151, 151] total 302 [2018-10-01 01:18:37,238 INFO L459 AbstractCegarLoop]: Interpolant automaton has 304 states [2018-10-01 01:18:37,243 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 304 interpolants. [2018-10-01 01:18:37,243 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:18:37,244 INFO L87 Difference]: Start difference. First operand 304 states and 304 transitions. Second operand 304 states. [2018-10-01 01:18:41,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:18:41,058 INFO L93 Difference]: Finished difference Result 307 states and 307 transitions. [2018-10-01 01:18:41,058 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 153 states. [2018-10-01 01:18:41,058 INFO L78 Accepts]: Start accepts. Automaton has 304 states. Word has length 303 [2018-10-01 01:18:41,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:18:41,059 INFO L225 Difference]: With dead ends: 307 [2018-10-01 01:18:41,059 INFO L226 Difference]: Without dead ends: 306 [2018-10-01 01:18:41,059 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 453 GetRequests, 151 SyntacticMatches, 0 SemanticMatches, 302 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.2s Time [2018-10-01 01:18:41,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 306 states. [2018-10-01 01:18:41,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 306 to 306. [2018-10-01 01:18:41,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 306 states. [2018-10-01 01:18:41,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 306 states to 306 states and 306 transitions. [2018-10-01 01:18:41,063 INFO L78 Accepts]: Start accepts. Automaton has 306 states and 306 transitions. Word has length 303 [2018-10-01 01:18:41,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:18:41,064 INFO L480 AbstractCegarLoop]: Abstraction has 306 states and 306 transitions. [2018-10-01 01:18:41,064 INFO L481 AbstractCegarLoop]: Interpolant automaton has 304 states. [2018-10-01 01:18:41,064 INFO L276 IsEmpty]: Start isEmpty. Operand 306 states and 306 transitions. [2018-10-01 01:18:41,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 306 [2018-10-01 01:18:41,065 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:18:41,065 INFO L375 BasicCegarLoop]: trace histogram [152, 151, 1, 1] [2018-10-01 01:18:41,065 INFO L423 AbstractCegarLoop]: === Iteration 152 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:18:41,065 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:18:41,065 INFO L82 PathProgramCache]: Analyzing trace with hash 1547880782, now seen corresponding path program 151 times [2018-10-01 01:18:41,065 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:18:41,065 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:18:41,065 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:18:41,066 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:18:41,066 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:18:41,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:18:42,302 INFO L134 CoverageAnalysis]: Checked inductivity of 22952 backedges. 0 proven. 22952 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:18:42,302 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:18:42,302 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 152 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 152 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:18:42,309 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:18:42,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:18:42,391 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:18:46,018 INFO L134 CoverageAnalysis]: Checked inductivity of 22952 backedges. 0 proven. 22952 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:18:46,039 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:18:46,039 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [152, 152] total 304 [2018-10-01 01:18:46,039 INFO L459 AbstractCegarLoop]: Interpolant automaton has 306 states [2018-10-01 01:18:46,044 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 306 interpolants. [2018-10-01 01:18:46,045 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:18:46,045 INFO L87 Difference]: Start difference. First operand 306 states and 306 transitions. Second operand 306 states. [2018-10-01 01:18:50,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:18:50,140 INFO L93 Difference]: Finished difference Result 309 states and 309 transitions. [2018-10-01 01:18:50,140 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 154 states. [2018-10-01 01:18:50,140 INFO L78 Accepts]: Start accepts. Automaton has 306 states. Word has length 305 [2018-10-01 01:18:50,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:18:50,141 INFO L225 Difference]: With dead ends: 309 [2018-10-01 01:18:50,141 INFO L226 Difference]: Without dead ends: 308 [2018-10-01 01:18:50,142 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 456 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 304 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.3s Time [2018-10-01 01:18:50,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 308 states. [2018-10-01 01:18:50,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 308 to 308. [2018-10-01 01:18:50,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 308 states. [2018-10-01 01:18:50,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 308 states to 308 states and 308 transitions. [2018-10-01 01:18:50,149 INFO L78 Accepts]: Start accepts. Automaton has 308 states and 308 transitions. Word has length 305 [2018-10-01 01:18:50,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:18:50,149 INFO L480 AbstractCegarLoop]: Abstraction has 308 states and 308 transitions. [2018-10-01 01:18:50,150 INFO L481 AbstractCegarLoop]: Interpolant automaton has 306 states. [2018-10-01 01:18:50,150 INFO L276 IsEmpty]: Start isEmpty. Operand 308 states and 308 transitions. [2018-10-01 01:18:50,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 308 [2018-10-01 01:18:50,151 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:18:50,151 INFO L375 BasicCegarLoop]: trace histogram [153, 152, 1, 1] [2018-10-01 01:18:50,151 INFO L423 AbstractCegarLoop]: === Iteration 153 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:18:50,151 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:18:50,152 INFO L82 PathProgramCache]: Analyzing trace with hash 1454748176, now seen corresponding path program 152 times [2018-10-01 01:18:50,152 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:18:50,152 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:18:50,152 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:18:50,152 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:18:50,153 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:18:50,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:18:51,671 INFO L134 CoverageAnalysis]: Checked inductivity of 23256 backedges. 0 proven. 23256 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:18:51,671 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:18:51,671 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 153 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 153 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:18:51,678 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 01:18:51,754 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 01:18:51,755 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:18:51,759 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:18:55,373 INFO L134 CoverageAnalysis]: Checked inductivity of 23256 backedges. 0 proven. 23256 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:18:55,393 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:18:55,393 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [153, 153] total 306 [2018-10-01 01:18:55,393 INFO L459 AbstractCegarLoop]: Interpolant automaton has 308 states [2018-10-01 01:18:55,399 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 308 interpolants. [2018-10-01 01:18:55,399 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:18:55,399 INFO L87 Difference]: Start difference. First operand 308 states and 308 transitions. Second operand 308 states. [2018-10-01 01:18:59,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:18:59,206 INFO L93 Difference]: Finished difference Result 311 states and 311 transitions. [2018-10-01 01:18:59,207 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 155 states. [2018-10-01 01:18:59,207 INFO L78 Accepts]: Start accepts. Automaton has 308 states. Word has length 307 [2018-10-01 01:18:59,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:18:59,208 INFO L225 Difference]: With dead ends: 311 [2018-10-01 01:18:59,208 INFO L226 Difference]: Without dead ends: 310 [2018-10-01 01:18:59,208 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 459 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 306 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.6s Time [2018-10-01 01:18:59,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 310 states. [2018-10-01 01:18:59,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 310 to 310. [2018-10-01 01:18:59,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 310 states. [2018-10-01 01:18:59,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 310 states to 310 states and 310 transitions. [2018-10-01 01:18:59,214 INFO L78 Accepts]: Start accepts. Automaton has 310 states and 310 transitions. Word has length 307 [2018-10-01 01:18:59,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:18:59,215 INFO L480 AbstractCegarLoop]: Abstraction has 310 states and 310 transitions. [2018-10-01 01:18:59,215 INFO L481 AbstractCegarLoop]: Interpolant automaton has 308 states. [2018-10-01 01:18:59,215 INFO L276 IsEmpty]: Start isEmpty. Operand 310 states and 310 transitions. [2018-10-01 01:18:59,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 310 [2018-10-01 01:18:59,216 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:18:59,216 INFO L375 BasicCegarLoop]: trace histogram [154, 153, 1, 1] [2018-10-01 01:18:59,216 INFO L423 AbstractCegarLoop]: === Iteration 154 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:18:59,216 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:18:59,216 INFO L82 PathProgramCache]: Analyzing trace with hash -2146340270, now seen corresponding path program 153 times [2018-10-01 01:18:59,216 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:18:59,216 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:18:59,217 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:18:59,217 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:18:59,217 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:18:59,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:19:00,521 INFO L134 CoverageAnalysis]: Checked inductivity of 23562 backedges. 0 proven. 23562 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:19:00,521 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:19:00,521 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 154 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 154 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:19:00,528 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 01:19:00,810 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 154 check-sat command(s) [2018-10-01 01:19:00,811 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:19:00,815 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:19:04,361 INFO L134 CoverageAnalysis]: Checked inductivity of 23562 backedges. 0 proven. 23562 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:19:04,381 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:19:04,381 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [154, 154] total 308 [2018-10-01 01:19:04,382 INFO L459 AbstractCegarLoop]: Interpolant automaton has 310 states [2018-10-01 01:19:04,387 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 310 interpolants. [2018-10-01 01:19:04,387 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:19:04,387 INFO L87 Difference]: Start difference. First operand 310 states and 310 transitions. Second operand 310 states. [2018-10-01 01:19:08,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:19:08,173 INFO L93 Difference]: Finished difference Result 313 states and 313 transitions. [2018-10-01 01:19:08,173 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 156 states. [2018-10-01 01:19:08,173 INFO L78 Accepts]: Start accepts. Automaton has 310 states. Word has length 309 [2018-10-01 01:19:08,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:19:08,174 INFO L225 Difference]: With dead ends: 313 [2018-10-01 01:19:08,174 INFO L226 Difference]: Without dead ends: 312 [2018-10-01 01:19:08,174 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 462 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 308 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.3s Time [2018-10-01 01:19:08,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 312 states. [2018-10-01 01:19:08,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 312 to 312. [2018-10-01 01:19:08,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 312 states. [2018-10-01 01:19:08,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 312 states to 312 states and 312 transitions. [2018-10-01 01:19:08,179 INFO L78 Accepts]: Start accepts. Automaton has 312 states and 312 transitions. Word has length 309 [2018-10-01 01:19:08,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:19:08,179 INFO L480 AbstractCegarLoop]: Abstraction has 312 states and 312 transitions. [2018-10-01 01:19:08,179 INFO L481 AbstractCegarLoop]: Interpolant automaton has 310 states. [2018-10-01 01:19:08,179 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states and 312 transitions. [2018-10-01 01:19:08,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 312 [2018-10-01 01:19:08,180 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:19:08,180 INFO L375 BasicCegarLoop]: trace histogram [155, 154, 1, 1] [2018-10-01 01:19:08,180 INFO L423 AbstractCegarLoop]: === Iteration 155 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:19:08,180 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:19:08,180 INFO L82 PathProgramCache]: Analyzing trace with hash -1048696300, now seen corresponding path program 154 times [2018-10-01 01:19:08,180 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:19:08,180 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:19:08,181 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:19:08,181 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:19:08,181 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:19:08,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:19:09,512 INFO L134 CoverageAnalysis]: Checked inductivity of 23870 backedges. 0 proven. 23870 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:19:09,513 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:19:09,513 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 155 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 155 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:19:09,520 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 01:19:09,615 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 01:19:09,616 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:19:09,621 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:19:13,069 INFO L134 CoverageAnalysis]: Checked inductivity of 23870 backedges. 0 proven. 23870 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:19:13,089 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:19:13,089 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [155, 155] total 310 [2018-10-01 01:19:13,090 INFO L459 AbstractCegarLoop]: Interpolant automaton has 312 states [2018-10-01 01:19:13,095 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 312 interpolants. [2018-10-01 01:19:13,095 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:19:13,095 INFO L87 Difference]: Start difference. First operand 312 states and 312 transitions. Second operand 312 states. [2018-10-01 01:19:17,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:19:17,073 INFO L93 Difference]: Finished difference Result 315 states and 315 transitions. [2018-10-01 01:19:17,073 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 157 states. [2018-10-01 01:19:17,073 INFO L78 Accepts]: Start accepts. Automaton has 312 states. Word has length 311 [2018-10-01 01:19:17,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:19:17,074 INFO L225 Difference]: With dead ends: 315 [2018-10-01 01:19:17,074 INFO L226 Difference]: Without dead ends: 314 [2018-10-01 01:19:17,074 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 465 GetRequests, 155 SyntacticMatches, 0 SemanticMatches, 310 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.3s Time [2018-10-01 01:19:17,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 314 states. [2018-10-01 01:19:17,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 314 to 314. [2018-10-01 01:19:17,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 314 states. [2018-10-01 01:19:17,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 314 states to 314 states and 314 transitions. [2018-10-01 01:19:17,079 INFO L78 Accepts]: Start accepts. Automaton has 314 states and 314 transitions. Word has length 311 [2018-10-01 01:19:17,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:19:17,079 INFO L480 AbstractCegarLoop]: Abstraction has 314 states and 314 transitions. [2018-10-01 01:19:17,079 INFO L481 AbstractCegarLoop]: Interpolant automaton has 312 states. [2018-10-01 01:19:17,079 INFO L276 IsEmpty]: Start isEmpty. Operand 314 states and 314 transitions. [2018-10-01 01:19:17,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 314 [2018-10-01 01:19:17,080 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:19:17,080 INFO L375 BasicCegarLoop]: trace histogram [156, 155, 1, 1] [2018-10-01 01:19:17,080 INFO L423 AbstractCegarLoop]: === Iteration 156 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:19:17,081 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:19:17,081 INFO L82 PathProgramCache]: Analyzing trace with hash 1520171350, now seen corresponding path program 155 times [2018-10-01 01:19:17,081 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:19:17,081 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:19:17,081 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:19:17,081 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:19:17,081 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:19:17,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:19:18,355 INFO L134 CoverageAnalysis]: Checked inductivity of 24180 backedges. 0 proven. 24180 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:19:18,355 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:19:18,355 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 156 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 156 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:19:18,362 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 01:19:18,673 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 156 check-sat command(s) [2018-10-01 01:19:18,673 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:19:18,682 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:19:22,278 INFO L134 CoverageAnalysis]: Checked inductivity of 24180 backedges. 0 proven. 24180 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:19:22,298 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:19:22,298 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [156, 156] total 312 [2018-10-01 01:19:22,299 INFO L459 AbstractCegarLoop]: Interpolant automaton has 314 states [2018-10-01 01:19:22,304 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 314 interpolants. [2018-10-01 01:19:22,304 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:19:22,304 INFO L87 Difference]: Start difference. First operand 314 states and 314 transitions. Second operand 314 states. [2018-10-01 01:19:26,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:19:26,274 INFO L93 Difference]: Finished difference Result 317 states and 317 transitions. [2018-10-01 01:19:26,274 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 158 states. [2018-10-01 01:19:26,274 INFO L78 Accepts]: Start accepts. Automaton has 314 states. Word has length 313 [2018-10-01 01:19:26,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:19:26,275 INFO L225 Difference]: With dead ends: 317 [2018-10-01 01:19:26,275 INFO L226 Difference]: Without dead ends: 316 [2018-10-01 01:19:26,275 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 468 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 312 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.3s Time [2018-10-01 01:19:26,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 316 states. [2018-10-01 01:19:26,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 316 to 316. [2018-10-01 01:19:26,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 316 states. [2018-10-01 01:19:26,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 316 states to 316 states and 316 transitions. [2018-10-01 01:19:26,283 INFO L78 Accepts]: Start accepts. Automaton has 316 states and 316 transitions. Word has length 313 [2018-10-01 01:19:26,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:19:26,284 INFO L480 AbstractCegarLoop]: Abstraction has 316 states and 316 transitions. [2018-10-01 01:19:26,284 INFO L481 AbstractCegarLoop]: Interpolant automaton has 314 states. [2018-10-01 01:19:26,284 INFO L276 IsEmpty]: Start isEmpty. Operand 316 states and 316 transitions. [2018-10-01 01:19:26,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 316 [2018-10-01 01:19:26,285 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:19:26,285 INFO L375 BasicCegarLoop]: trace histogram [157, 156, 1, 1] [2018-10-01 01:19:26,286 INFO L423 AbstractCegarLoop]: === Iteration 157 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:19:26,286 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:19:26,286 INFO L82 PathProgramCache]: Analyzing trace with hash 595787800, now seen corresponding path program 156 times [2018-10-01 01:19:26,286 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:19:26,286 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:19:26,287 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:19:26,287 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:19:26,287 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:19:26,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:19:27,841 INFO L134 CoverageAnalysis]: Checked inductivity of 24492 backedges. 0 proven. 24492 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:19:27,841 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:19:27,841 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 157 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 157 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:19:27,850 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 01:19:28,108 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 157 check-sat command(s) [2018-10-01 01:19:28,108 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:19:28,114 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:19:31,796 INFO L134 CoverageAnalysis]: Checked inductivity of 24492 backedges. 0 proven. 24492 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:19:31,816 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:19:31,817 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [157, 157] total 314 [2018-10-01 01:19:31,817 INFO L459 AbstractCegarLoop]: Interpolant automaton has 316 states [2018-10-01 01:19:31,823 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 316 interpolants. [2018-10-01 01:19:31,823 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:19:31,823 INFO L87 Difference]: Start difference. First operand 316 states and 316 transitions. Second operand 316 states. [2018-10-01 01:19:36,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:19:36,208 INFO L93 Difference]: Finished difference Result 319 states and 319 transitions. [2018-10-01 01:19:36,208 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 159 states. [2018-10-01 01:19:36,208 INFO L78 Accepts]: Start accepts. Automaton has 316 states. Word has length 315 [2018-10-01 01:19:36,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:19:36,209 INFO L225 Difference]: With dead ends: 319 [2018-10-01 01:19:36,209 INFO L226 Difference]: Without dead ends: 318 [2018-10-01 01:19:36,209 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 471 GetRequests, 157 SyntacticMatches, 0 SemanticMatches, 314 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.7s Time [2018-10-01 01:19:36,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 318 states. [2018-10-01 01:19:36,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 318 to 318. [2018-10-01 01:19:36,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 318 states. [2018-10-01 01:19:36,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 318 states to 318 states and 318 transitions. [2018-10-01 01:19:36,214 INFO L78 Accepts]: Start accepts. Automaton has 318 states and 318 transitions. Word has length 315 [2018-10-01 01:19:36,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:19:36,215 INFO L480 AbstractCegarLoop]: Abstraction has 318 states and 318 transitions. [2018-10-01 01:19:36,215 INFO L481 AbstractCegarLoop]: Interpolant automaton has 316 states. [2018-10-01 01:19:36,215 INFO L276 IsEmpty]: Start isEmpty. Operand 318 states and 318 transitions. [2018-10-01 01:19:36,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 318 [2018-10-01 01:19:36,216 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:19:36,216 INFO L375 BasicCegarLoop]: trace histogram [158, 157, 1, 1] [2018-10-01 01:19:36,216 INFO L423 AbstractCegarLoop]: === Iteration 158 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:19:36,216 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:19:36,216 INFO L82 PathProgramCache]: Analyzing trace with hash 1321426522, now seen corresponding path program 157 times [2018-10-01 01:19:36,216 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:19:36,217 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:19:36,217 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:19:36,217 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:19:36,217 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:19:36,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:19:37,553 INFO L134 CoverageAnalysis]: Checked inductivity of 24806 backedges. 0 proven. 24806 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:19:37,553 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:19:37,553 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 158 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 158 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:19:37,561 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:19:37,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:19:37,649 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:19:41,306 INFO L134 CoverageAnalysis]: Checked inductivity of 24806 backedges. 0 proven. 24806 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:19:41,326 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:19:41,326 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [158, 158] total 316 [2018-10-01 01:19:41,326 INFO L459 AbstractCegarLoop]: Interpolant automaton has 318 states [2018-10-01 01:19:41,332 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 318 interpolants. [2018-10-01 01:19:41,332 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:19:41,332 INFO L87 Difference]: Start difference. First operand 318 states and 318 transitions. Second operand 318 states. [2018-10-01 01:19:45,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:19:45,697 INFO L93 Difference]: Finished difference Result 321 states and 321 transitions. [2018-10-01 01:19:45,697 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 160 states. [2018-10-01 01:19:45,698 INFO L78 Accepts]: Start accepts. Automaton has 318 states. Word has length 317 [2018-10-01 01:19:45,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:19:45,698 INFO L225 Difference]: With dead ends: 321 [2018-10-01 01:19:45,698 INFO L226 Difference]: Without dead ends: 320 [2018-10-01 01:19:45,698 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 474 GetRequests, 158 SyntacticMatches, 0 SemanticMatches, 316 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.4s Time [2018-10-01 01:19:45,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 320 states. [2018-10-01 01:19:45,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 320 to 320. [2018-10-01 01:19:45,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 320 states. [2018-10-01 01:19:45,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 320 states to 320 states and 320 transitions. [2018-10-01 01:19:45,704 INFO L78 Accepts]: Start accepts. Automaton has 320 states and 320 transitions. Word has length 317 [2018-10-01 01:19:45,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:19:45,704 INFO L480 AbstractCegarLoop]: Abstraction has 320 states and 320 transitions. [2018-10-01 01:19:45,704 INFO L481 AbstractCegarLoop]: Interpolant automaton has 318 states. [2018-10-01 01:19:45,704 INFO L276 IsEmpty]: Start isEmpty. Operand 320 states and 320 transitions. [2018-10-01 01:19:45,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 320 [2018-10-01 01:19:45,705 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:19:45,705 INFO L375 BasicCegarLoop]: trace histogram [159, 158, 1, 1] [2018-10-01 01:19:45,705 INFO L423 AbstractCegarLoop]: === Iteration 159 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:19:45,705 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:19:45,705 INFO L82 PathProgramCache]: Analyzing trace with hash -1419430884, now seen corresponding path program 158 times [2018-10-01 01:19:45,705 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:19:45,705 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:19:45,706 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:19:45,706 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:19:45,706 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:19:45,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:19:47,060 INFO L134 CoverageAnalysis]: Checked inductivity of 25122 backedges. 0 proven. 25122 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:19:47,060 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:19:47,060 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 159 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 159 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:19:47,068 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 01:19:47,146 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 01:19:47,146 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:19:47,151 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:19:50,883 INFO L134 CoverageAnalysis]: Checked inductivity of 25122 backedges. 0 proven. 25122 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:19:50,903 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:19:50,904 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [159, 159] total 318 [2018-10-01 01:19:50,904 INFO L459 AbstractCegarLoop]: Interpolant automaton has 320 states [2018-10-01 01:19:50,910 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 320 interpolants. [2018-10-01 01:19:50,910 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:19:50,910 INFO L87 Difference]: Start difference. First operand 320 states and 320 transitions. Second operand 320 states. [2018-10-01 01:19:55,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:19:55,329 INFO L93 Difference]: Finished difference Result 323 states and 323 transitions. [2018-10-01 01:19:55,329 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 161 states. [2018-10-01 01:19:55,329 INFO L78 Accepts]: Start accepts. Automaton has 320 states. Word has length 319 [2018-10-01 01:19:55,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:19:55,330 INFO L225 Difference]: With dead ends: 323 [2018-10-01 01:19:55,330 INFO L226 Difference]: Without dead ends: 322 [2018-10-01 01:19:55,330 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 477 GetRequests, 159 SyntacticMatches, 0 SemanticMatches, 318 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.5s Time [2018-10-01 01:19:55,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 322 states. [2018-10-01 01:19:55,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 322 to 322. [2018-10-01 01:19:55,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 322 states. [2018-10-01 01:19:55,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 322 states to 322 states and 322 transitions. [2018-10-01 01:19:55,335 INFO L78 Accepts]: Start accepts. Automaton has 322 states and 322 transitions. Word has length 319 [2018-10-01 01:19:55,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:19:55,336 INFO L480 AbstractCegarLoop]: Abstraction has 322 states and 322 transitions. [2018-10-01 01:19:55,336 INFO L481 AbstractCegarLoop]: Interpolant automaton has 320 states. [2018-10-01 01:19:55,336 INFO L276 IsEmpty]: Start isEmpty. Operand 322 states and 322 transitions. [2018-10-01 01:19:55,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 322 [2018-10-01 01:19:55,337 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:19:55,337 INFO L375 BasicCegarLoop]: trace histogram [160, 159, 1, 1] [2018-10-01 01:19:55,337 INFO L423 AbstractCegarLoop]: === Iteration 160 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:19:55,337 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:19:55,337 INFO L82 PathProgramCache]: Analyzing trace with hash 1726521694, now seen corresponding path program 159 times [2018-10-01 01:19:55,337 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:19:55,337 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:19:55,338 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:19:55,338 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:19:55,338 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:19:55,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:19:56,679 INFO L134 CoverageAnalysis]: Checked inductivity of 25440 backedges. 0 proven. 25440 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:19:56,680 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:19:56,680 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 160 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 160 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:19:56,687 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 01:19:56,988 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 160 check-sat command(s) [2018-10-01 01:19:56,988 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:19:56,993 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:20:00,869 INFO L134 CoverageAnalysis]: Checked inductivity of 25440 backedges. 0 proven. 25440 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:20:00,889 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:20:00,889 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [160, 160] total 320 [2018-10-01 01:20:00,890 INFO L459 AbstractCegarLoop]: Interpolant automaton has 322 states [2018-10-01 01:20:00,895 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 322 interpolants. [2018-10-01 01:20:00,895 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:20:00,896 INFO L87 Difference]: Start difference. First operand 322 states and 322 transitions. Second operand 322 states. [2018-10-01 01:20:05,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:20:05,355 INFO L93 Difference]: Finished difference Result 325 states and 325 transitions. [2018-10-01 01:20:05,355 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 162 states. [2018-10-01 01:20:05,355 INFO L78 Accepts]: Start accepts. Automaton has 322 states. Word has length 321 [2018-10-01 01:20:05,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:20:05,356 INFO L225 Difference]: With dead ends: 325 [2018-10-01 01:20:05,356 INFO L226 Difference]: Without dead ends: 324 [2018-10-01 01:20:05,356 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 480 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 320 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.6s Time [2018-10-01 01:20:05,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 324 states. [2018-10-01 01:20:05,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 324 to 324. [2018-10-01 01:20:05,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 324 states. [2018-10-01 01:20:05,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 324 states to 324 states and 324 transitions. [2018-10-01 01:20:05,361 INFO L78 Accepts]: Start accepts. Automaton has 324 states and 324 transitions. Word has length 321 [2018-10-01 01:20:05,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:20:05,362 INFO L480 AbstractCegarLoop]: Abstraction has 324 states and 324 transitions. [2018-10-01 01:20:05,362 INFO L481 AbstractCegarLoop]: Interpolant automaton has 322 states. [2018-10-01 01:20:05,362 INFO L276 IsEmpty]: Start isEmpty. Operand 324 states and 324 transitions. [2018-10-01 01:20:05,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 324 [2018-10-01 01:20:05,363 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:20:05,363 INFO L375 BasicCegarLoop]: trace histogram [161, 160, 1, 1] [2018-10-01 01:20:05,363 INFO L423 AbstractCegarLoop]: === Iteration 161 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:20:05,363 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:20:05,363 INFO L82 PathProgramCache]: Analyzing trace with hash 1329972768, now seen corresponding path program 160 times [2018-10-01 01:20:05,363 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:20:05,363 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:20:05,364 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:20:05,364 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:20:05,364 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:20:05,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:20:06,772 INFO L134 CoverageAnalysis]: Checked inductivity of 25760 backedges. 0 proven. 25760 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:20:06,772 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:20:06,772 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 161 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 161 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:20:06,779 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 01:20:06,881 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 01:20:06,881 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:20:06,888 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:20:10,600 INFO L134 CoverageAnalysis]: Checked inductivity of 25760 backedges. 0 proven. 25760 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:20:10,621 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:20:10,621 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [161, 161] total 322 [2018-10-01 01:20:10,621 INFO L459 AbstractCegarLoop]: Interpolant automaton has 324 states [2018-10-01 01:20:10,627 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 324 interpolants. [2018-10-01 01:20:10,627 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:20:10,627 INFO L87 Difference]: Start difference. First operand 324 states and 324 transitions. Second operand 324 states. [2018-10-01 01:20:15,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:20:15,330 INFO L93 Difference]: Finished difference Result 327 states and 327 transitions. [2018-10-01 01:20:15,330 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 163 states. [2018-10-01 01:20:15,331 INFO L78 Accepts]: Start accepts. Automaton has 324 states. Word has length 323 [2018-10-01 01:20:15,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:20:15,331 INFO L225 Difference]: With dead ends: 327 [2018-10-01 01:20:15,331 INFO L226 Difference]: Without dead ends: 326 [2018-10-01 01:20:15,331 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 483 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 322 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.5s Time [2018-10-01 01:20:15,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 326 states. [2018-10-01 01:20:15,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 326 to 326. [2018-10-01 01:20:15,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 326 states. [2018-10-01 01:20:15,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 326 states to 326 states and 326 transitions. [2018-10-01 01:20:15,337 INFO L78 Accepts]: Start accepts. Automaton has 326 states and 326 transitions. Word has length 323 [2018-10-01 01:20:15,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:20:15,337 INFO L480 AbstractCegarLoop]: Abstraction has 326 states and 326 transitions. [2018-10-01 01:20:15,337 INFO L481 AbstractCegarLoop]: Interpolant automaton has 324 states. [2018-10-01 01:20:15,337 INFO L276 IsEmpty]: Start isEmpty. Operand 326 states and 326 transitions. [2018-10-01 01:20:15,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 326 [2018-10-01 01:20:15,338 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:20:15,338 INFO L375 BasicCegarLoop]: trace histogram [162, 161, 1, 1] [2018-10-01 01:20:15,338 INFO L423 AbstractCegarLoop]: === Iteration 162 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:20:15,338 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:20:15,338 INFO L82 PathProgramCache]: Analyzing trace with hash -1796423070, now seen corresponding path program 161 times [2018-10-01 01:20:15,338 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:20:15,338 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:20:15,339 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:20:15,339 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:20:15,339 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:20:15,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:20:16,752 INFO L134 CoverageAnalysis]: Checked inductivity of 26082 backedges. 0 proven. 26082 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:20:16,752 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:20:16,752 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 162 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 162 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:20:16,760 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 01:20:17,099 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 162 check-sat command(s) [2018-10-01 01:20:17,099 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:20:17,113 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:20:21,030 INFO L134 CoverageAnalysis]: Checked inductivity of 26082 backedges. 0 proven. 26082 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:20:21,050 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:20:21,050 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [162, 162] total 324 [2018-10-01 01:20:21,051 INFO L459 AbstractCegarLoop]: Interpolant automaton has 326 states [2018-10-01 01:20:21,057 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 326 interpolants. [2018-10-01 01:20:21,057 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:20:21,057 INFO L87 Difference]: Start difference. First operand 326 states and 326 transitions. Second operand 326 states. [2018-10-01 01:20:25,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:20:25,818 INFO L93 Difference]: Finished difference Result 329 states and 329 transitions. [2018-10-01 01:20:25,819 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 164 states. [2018-10-01 01:20:25,819 INFO L78 Accepts]: Start accepts. Automaton has 326 states. Word has length 325 [2018-10-01 01:20:25,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:20:25,819 INFO L225 Difference]: With dead ends: 329 [2018-10-01 01:20:25,819 INFO L226 Difference]: Without dead ends: 328 [2018-10-01 01:20:25,819 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 486 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 324 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.8s Time [2018-10-01 01:20:25,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 328 states. [2018-10-01 01:20:25,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 328 to 328. [2018-10-01 01:20:25,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 328 states. [2018-10-01 01:20:25,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 328 states to 328 states and 328 transitions. [2018-10-01 01:20:25,825 INFO L78 Accepts]: Start accepts. Automaton has 328 states and 328 transitions. Word has length 325 [2018-10-01 01:20:25,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:20:25,825 INFO L480 AbstractCegarLoop]: Abstraction has 328 states and 328 transitions. [2018-10-01 01:20:25,825 INFO L481 AbstractCegarLoop]: Interpolant automaton has 326 states. [2018-10-01 01:20:25,825 INFO L276 IsEmpty]: Start isEmpty. Operand 328 states and 328 transitions. [2018-10-01 01:20:25,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 328 [2018-10-01 01:20:25,826 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:20:25,826 INFO L375 BasicCegarLoop]: trace histogram [163, 162, 1, 1] [2018-10-01 01:20:25,826 INFO L423 AbstractCegarLoop]: === Iteration 163 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:20:25,826 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:20:25,826 INFO L82 PathProgramCache]: Analyzing trace with hash 214283812, now seen corresponding path program 162 times [2018-10-01 01:20:25,826 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:20:25,827 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:20:25,827 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:20:25,827 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:20:25,827 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:20:25,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:20:27,252 INFO L134 CoverageAnalysis]: Checked inductivity of 26406 backedges. 0 proven. 26406 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:20:27,252 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:20:27,252 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 163 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 163 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:20:27,259 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 01:20:27,532 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 163 check-sat command(s) [2018-10-01 01:20:27,532 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:20:27,537 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:20:31,365 INFO L134 CoverageAnalysis]: Checked inductivity of 26406 backedges. 0 proven. 26406 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:20:31,386 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:20:31,386 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [163, 163] total 326 [2018-10-01 01:20:31,387 INFO L459 AbstractCegarLoop]: Interpolant automaton has 328 states [2018-10-01 01:20:31,393 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 328 interpolants. [2018-10-01 01:20:31,393 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:20:31,393 INFO L87 Difference]: Start difference. First operand 328 states and 328 transitions. Second operand 328 states. [2018-10-01 01:20:35,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:20:35,816 INFO L93 Difference]: Finished difference Result 331 states and 331 transitions. [2018-10-01 01:20:35,816 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 165 states. [2018-10-01 01:20:35,816 INFO L78 Accepts]: Start accepts. Automaton has 328 states. Word has length 327 [2018-10-01 01:20:35,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:20:35,817 INFO L225 Difference]: With dead ends: 331 [2018-10-01 01:20:35,817 INFO L226 Difference]: Without dead ends: 330 [2018-10-01 01:20:35,817 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 489 GetRequests, 163 SyntacticMatches, 0 SemanticMatches, 326 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.6s Time [2018-10-01 01:20:35,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 330 states. [2018-10-01 01:20:35,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 330 to 330. [2018-10-01 01:20:35,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 330 states. [2018-10-01 01:20:35,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 330 states to 330 states and 330 transitions. [2018-10-01 01:20:35,822 INFO L78 Accepts]: Start accepts. Automaton has 330 states and 330 transitions. Word has length 327 [2018-10-01 01:20:35,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:20:35,822 INFO L480 AbstractCegarLoop]: Abstraction has 330 states and 330 transitions. [2018-10-01 01:20:35,823 INFO L481 AbstractCegarLoop]: Interpolant automaton has 328 states. [2018-10-01 01:20:35,823 INFO L276 IsEmpty]: Start isEmpty. Operand 330 states and 330 transitions. [2018-10-01 01:20:35,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 330 [2018-10-01 01:20:35,824 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:20:35,824 INFO L375 BasicCegarLoop]: trace histogram [164, 163, 1, 1] [2018-10-01 01:20:35,824 INFO L423 AbstractCegarLoop]: === Iteration 164 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:20:35,824 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:20:35,824 INFO L82 PathProgramCache]: Analyzing trace with hash -231685786, now seen corresponding path program 163 times [2018-10-01 01:20:35,824 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:20:35,824 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:20:35,825 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:20:35,825 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:20:35,825 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:20:35,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:20:37,252 INFO L134 CoverageAnalysis]: Checked inductivity of 26732 backedges. 0 proven. 26732 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:20:37,252 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:20:37,252 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 164 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 164 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:20:37,259 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:20:37,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:20:37,349 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:20:41,216 INFO L134 CoverageAnalysis]: Checked inductivity of 26732 backedges. 0 proven. 26732 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:20:41,237 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:20:41,237 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [164, 164] total 328 [2018-10-01 01:20:41,237 INFO L459 AbstractCegarLoop]: Interpolant automaton has 330 states [2018-10-01 01:20:41,244 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 330 interpolants. [2018-10-01 01:20:41,244 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:20:41,244 INFO L87 Difference]: Start difference. First operand 330 states and 330 transitions. Second operand 330 states. [2018-10-01 01:20:45,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:20:45,433 INFO L93 Difference]: Finished difference Result 333 states and 333 transitions. [2018-10-01 01:20:45,433 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 166 states. [2018-10-01 01:20:45,433 INFO L78 Accepts]: Start accepts. Automaton has 330 states. Word has length 329 [2018-10-01 01:20:45,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:20:45,433 INFO L225 Difference]: With dead ends: 333 [2018-10-01 01:20:45,433 INFO L226 Difference]: Without dead ends: 332 [2018-10-01 01:20:45,434 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 492 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 328 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.7s Time [2018-10-01 01:20:45,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 332 states. [2018-10-01 01:20:45,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 332 to 332. [2018-10-01 01:20:45,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 332 states. [2018-10-01 01:20:45,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 332 states to 332 states and 332 transitions. [2018-10-01 01:20:45,442 INFO L78 Accepts]: Start accepts. Automaton has 332 states and 332 transitions. Word has length 329 [2018-10-01 01:20:45,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:20:45,443 INFO L480 AbstractCegarLoop]: Abstraction has 332 states and 332 transitions. [2018-10-01 01:20:45,443 INFO L481 AbstractCegarLoop]: Interpolant automaton has 330 states. [2018-10-01 01:20:45,443 INFO L276 IsEmpty]: Start isEmpty. Operand 332 states and 332 transitions. [2018-10-01 01:20:45,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 332 [2018-10-01 01:20:45,444 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:20:45,444 INFO L375 BasicCegarLoop]: trace histogram [165, 164, 1, 1] [2018-10-01 01:20:45,445 INFO L423 AbstractCegarLoop]: === Iteration 165 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:20:45,445 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:20:45,445 INFO L82 PathProgramCache]: Analyzing trace with hash 688260136, now seen corresponding path program 164 times [2018-10-01 01:20:45,445 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:20:45,445 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:20:45,446 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:20:45,446 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:20:45,446 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:20:45,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:20:47,028 INFO L134 CoverageAnalysis]: Checked inductivity of 27060 backedges. 0 proven. 27060 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:20:47,028 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:20:47,028 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 165 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 165 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:20:47,035 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 01:20:47,132 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 01:20:47,133 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:20:47,139 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:20:51,348 INFO L134 CoverageAnalysis]: Checked inductivity of 27060 backedges. 0 proven. 27060 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:20:51,368 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:20:51,368 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [165, 165] total 330 [2018-10-01 01:20:51,368 INFO L459 AbstractCegarLoop]: Interpolant automaton has 332 states [2018-10-01 01:20:51,374 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 332 interpolants. [2018-10-01 01:20:51,374 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:20:51,374 INFO L87 Difference]: Start difference. First operand 332 states and 332 transitions. Second operand 332 states. [2018-10-01 01:20:55,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:20:55,684 INFO L93 Difference]: Finished difference Result 335 states and 335 transitions. [2018-10-01 01:20:55,684 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 167 states. [2018-10-01 01:20:55,684 INFO L78 Accepts]: Start accepts. Automaton has 332 states. Word has length 331 [2018-10-01 01:20:55,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:20:55,684 INFO L225 Difference]: With dead ends: 335 [2018-10-01 01:20:55,684 INFO L226 Difference]: Without dead ends: 334 [2018-10-01 01:20:55,685 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 495 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 330 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.1s Time [2018-10-01 01:20:55,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 334 states. [2018-10-01 01:20:55,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 334 to 334. [2018-10-01 01:20:55,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 334 states. [2018-10-01 01:20:55,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 334 states to 334 states and 334 transitions. [2018-10-01 01:20:55,689 INFO L78 Accepts]: Start accepts. Automaton has 334 states and 334 transitions. Word has length 331 [2018-10-01 01:20:55,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:20:55,690 INFO L480 AbstractCegarLoop]: Abstraction has 334 states and 334 transitions. [2018-10-01 01:20:55,690 INFO L481 AbstractCegarLoop]: Interpolant automaton has 332 states. [2018-10-01 01:20:55,690 INFO L276 IsEmpty]: Start isEmpty. Operand 334 states and 334 transitions. [2018-10-01 01:20:55,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 334 [2018-10-01 01:20:55,691 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:20:55,691 INFO L375 BasicCegarLoop]: trace histogram [166, 165, 1, 1] [2018-10-01 01:20:55,691 INFO L423 AbstractCegarLoop]: === Iteration 166 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:20:55,691 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:20:55,691 INFO L82 PathProgramCache]: Analyzing trace with hash -6971798, now seen corresponding path program 165 times [2018-10-01 01:20:55,691 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:20:55,691 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:20:55,692 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:20:55,692 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:20:55,692 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:20:55,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:20:57,167 INFO L134 CoverageAnalysis]: Checked inductivity of 27390 backedges. 0 proven. 27390 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:20:57,167 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:20:57,167 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 166 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 166 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:20:57,179 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 01:20:57,520 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 166 check-sat command(s) [2018-10-01 01:20:57,520 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:20:57,525 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:21:01,464 INFO L134 CoverageAnalysis]: Checked inductivity of 27390 backedges. 0 proven. 27390 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:21:01,485 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:21:01,486 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [166, 166] total 332 [2018-10-01 01:21:01,486 INFO L459 AbstractCegarLoop]: Interpolant automaton has 334 states [2018-10-01 01:21:01,492 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 334 interpolants. [2018-10-01 01:21:01,492 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:21:01,492 INFO L87 Difference]: Start difference. First operand 334 states and 334 transitions. Second operand 334 states. [2018-10-01 01:21:05,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:21:05,813 INFO L93 Difference]: Finished difference Result 337 states and 337 transitions. [2018-10-01 01:21:05,813 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 168 states. [2018-10-01 01:21:05,813 INFO L78 Accepts]: Start accepts. Automaton has 334 states. Word has length 333 [2018-10-01 01:21:05,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:21:05,814 INFO L225 Difference]: With dead ends: 337 [2018-10-01 01:21:05,814 INFO L226 Difference]: Without dead ends: 336 [2018-10-01 01:21:05,814 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 498 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 332 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.8s Time [2018-10-01 01:21:05,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 336 states. [2018-10-01 01:21:05,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 336 to 336. [2018-10-01 01:21:05,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 336 states. [2018-10-01 01:21:05,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 336 states to 336 states and 336 transitions. [2018-10-01 01:21:05,822 INFO L78 Accepts]: Start accepts. Automaton has 336 states and 336 transitions. Word has length 333 [2018-10-01 01:21:05,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:21:05,822 INFO L480 AbstractCegarLoop]: Abstraction has 336 states and 336 transitions. [2018-10-01 01:21:05,822 INFO L481 AbstractCegarLoop]: Interpolant automaton has 334 states. [2018-10-01 01:21:05,822 INFO L276 IsEmpty]: Start isEmpty. Operand 336 states and 336 transitions. [2018-10-01 01:21:05,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 336 [2018-10-01 01:21:05,824 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:21:05,824 INFO L375 BasicCegarLoop]: trace histogram [167, 166, 1, 1] [2018-10-01 01:21:05,824 INFO L423 AbstractCegarLoop]: === Iteration 167 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:21:05,824 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:21:05,824 INFO L82 PathProgramCache]: Analyzing trace with hash 1890037804, now seen corresponding path program 166 times [2018-10-01 01:21:05,824 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:21:05,824 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:21:05,825 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:21:05,825 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:21:05,825 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:21:05,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:21:07,416 INFO L134 CoverageAnalysis]: Checked inductivity of 27722 backedges. 0 proven. 27722 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:21:07,416 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:21:07,416 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 167 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 167 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:21:07,423 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 01:21:07,527 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 01:21:07,527 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:21:07,534 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:21:11,611 INFO L134 CoverageAnalysis]: Checked inductivity of 27722 backedges. 0 proven. 27722 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:21:11,632 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:21:11,633 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [167, 167] total 334 [2018-10-01 01:21:11,633 INFO L459 AbstractCegarLoop]: Interpolant automaton has 336 states [2018-10-01 01:21:11,639 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 336 interpolants. [2018-10-01 01:21:11,639 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:21:11,640 INFO L87 Difference]: Start difference. First operand 336 states and 336 transitions. Second operand 336 states. [2018-10-01 01:21:16,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:21:16,367 INFO L93 Difference]: Finished difference Result 339 states and 339 transitions. [2018-10-01 01:21:16,367 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 169 states. [2018-10-01 01:21:16,367 INFO L78 Accepts]: Start accepts. Automaton has 336 states. Word has length 335 [2018-10-01 01:21:16,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:21:16,368 INFO L225 Difference]: With dead ends: 339 [2018-10-01 01:21:16,368 INFO L226 Difference]: Without dead ends: 338 [2018-10-01 01:21:16,368 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 501 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 334 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.1s Time [2018-10-01 01:21:16,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 338 states. [2018-10-01 01:21:16,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 338 to 338. [2018-10-01 01:21:16,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 338 states. [2018-10-01 01:21:16,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 338 states to 338 states and 338 transitions. [2018-10-01 01:21:16,373 INFO L78 Accepts]: Start accepts. Automaton has 338 states and 338 transitions. Word has length 335 [2018-10-01 01:21:16,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:21:16,374 INFO L480 AbstractCegarLoop]: Abstraction has 338 states and 338 transitions. [2018-10-01 01:21:16,374 INFO L481 AbstractCegarLoop]: Interpolant automaton has 336 states. [2018-10-01 01:21:16,374 INFO L276 IsEmpty]: Start isEmpty. Operand 338 states and 338 transitions. [2018-10-01 01:21:16,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 338 [2018-10-01 01:21:16,375 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:21:16,375 INFO L375 BasicCegarLoop]: trace histogram [168, 167, 1, 1] [2018-10-01 01:21:16,375 INFO L423 AbstractCegarLoop]: === Iteration 168 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:21:16,375 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:21:16,375 INFO L82 PathProgramCache]: Analyzing trace with hash -444835474, now seen corresponding path program 167 times [2018-10-01 01:21:16,375 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:21:16,375 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:21:16,376 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:21:16,376 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:21:16,376 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:21:16,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:21:17,886 INFO L134 CoverageAnalysis]: Checked inductivity of 28056 backedges. 0 proven. 28056 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:21:17,886 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:21:17,886 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 168 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 168 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:21:17,893 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 01:21:18,247 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 168 check-sat command(s) [2018-10-01 01:21:18,248 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:21:18,261 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:21:22,457 INFO L134 CoverageAnalysis]: Checked inductivity of 28056 backedges. 0 proven. 28056 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:21:22,477 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:21:22,477 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [168, 168] total 336 [2018-10-01 01:21:22,478 INFO L459 AbstractCegarLoop]: Interpolant automaton has 338 states [2018-10-01 01:21:22,484 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 338 interpolants. [2018-10-01 01:21:22,485 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:21:22,485 INFO L87 Difference]: Start difference. First operand 338 states and 338 transitions. Second operand 338 states. [2018-10-01 01:21:27,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:21:27,663 INFO L93 Difference]: Finished difference Result 341 states and 341 transitions. [2018-10-01 01:21:27,663 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 170 states. [2018-10-01 01:21:27,663 INFO L78 Accepts]: Start accepts. Automaton has 338 states. Word has length 337 [2018-10-01 01:21:27,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:21:27,664 INFO L225 Difference]: With dead ends: 341 [2018-10-01 01:21:27,664 INFO L226 Difference]: Without dead ends: 340 [2018-10-01 01:21:27,664 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 504 GetRequests, 168 SyntacticMatches, 0 SemanticMatches, 336 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.1s Time [2018-10-01 01:21:27,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 340 states. [2018-10-01 01:21:27,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 340 to 340. [2018-10-01 01:21:27,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 340 states. [2018-10-01 01:21:27,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 340 states to 340 states and 340 transitions. [2018-10-01 01:21:27,670 INFO L78 Accepts]: Start accepts. Automaton has 340 states and 340 transitions. Word has length 337 [2018-10-01 01:21:27,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:21:27,670 INFO L480 AbstractCegarLoop]: Abstraction has 340 states and 340 transitions. [2018-10-01 01:21:27,670 INFO L481 AbstractCegarLoop]: Interpolant automaton has 338 states. [2018-10-01 01:21:27,670 INFO L276 IsEmpty]: Start isEmpty. Operand 340 states and 340 transitions. [2018-10-01 01:21:27,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 340 [2018-10-01 01:21:27,671 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:21:27,671 INFO L375 BasicCegarLoop]: trace histogram [169, 168, 1, 1] [2018-10-01 01:21:27,671 INFO L423 AbstractCegarLoop]: === Iteration 169 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:21:27,671 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:21:27,671 INFO L82 PathProgramCache]: Analyzing trace with hash 2009840176, now seen corresponding path program 168 times [2018-10-01 01:21:27,671 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:21:27,671 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:21:27,672 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:21:27,672 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:21:27,672 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:21:27,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:21:29,178 INFO L134 CoverageAnalysis]: Checked inductivity of 28392 backedges. 0 proven. 28392 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:21:29,178 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:21:29,179 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 169 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 169 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:21:29,186 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 01:21:29,478 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 169 check-sat command(s) [2018-10-01 01:21:29,479 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:21:29,484 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:21:33,731 INFO L134 CoverageAnalysis]: Checked inductivity of 28392 backedges. 0 proven. 28392 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:21:33,751 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:21:33,752 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [169, 169] total 338 [2018-10-01 01:21:33,752 INFO L459 AbstractCegarLoop]: Interpolant automaton has 340 states [2018-10-01 01:21:33,758 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 340 interpolants. [2018-10-01 01:21:33,758 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:21:33,758 INFO L87 Difference]: Start difference. First operand 340 states and 340 transitions. Second operand 340 states. [2018-10-01 01:21:38,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:21:38,130 INFO L93 Difference]: Finished difference Result 343 states and 343 transitions. [2018-10-01 01:21:38,130 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 171 states. [2018-10-01 01:21:38,130 INFO L78 Accepts]: Start accepts. Automaton has 340 states. Word has length 339 [2018-10-01 01:21:38,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:21:38,131 INFO L225 Difference]: With dead ends: 343 [2018-10-01 01:21:38,131 INFO L226 Difference]: Without dead ends: 342 [2018-10-01 01:21:38,131 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 507 GetRequests, 169 SyntacticMatches, 0 SemanticMatches, 338 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.1s Time [2018-10-01 01:21:38,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 342 states. [2018-10-01 01:21:38,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 342 to 342. [2018-10-01 01:21:38,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 342 states. [2018-10-01 01:21:38,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 342 states to 342 states and 342 transitions. [2018-10-01 01:21:38,137 INFO L78 Accepts]: Start accepts. Automaton has 342 states and 342 transitions. Word has length 339 [2018-10-01 01:21:38,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:21:38,137 INFO L480 AbstractCegarLoop]: Abstraction has 342 states and 342 transitions. [2018-10-01 01:21:38,137 INFO L481 AbstractCegarLoop]: Interpolant automaton has 340 states. [2018-10-01 01:21:38,137 INFO L276 IsEmpty]: Start isEmpty. Operand 342 states and 342 transitions. [2018-10-01 01:21:38,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 342 [2018-10-01 01:21:38,138 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:21:38,138 INFO L375 BasicCegarLoop]: trace histogram [170, 169, 1, 1] [2018-10-01 01:21:38,138 INFO L423 AbstractCegarLoop]: === Iteration 170 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:21:38,138 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:21:38,138 INFO L82 PathProgramCache]: Analyzing trace with hash -1278872974, now seen corresponding path program 169 times [2018-10-01 01:21:38,138 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:21:38,138 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:21:38,139 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:21:38,139 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:21:38,139 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:21:38,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:21:39,682 INFO L134 CoverageAnalysis]: Checked inductivity of 28730 backedges. 0 proven. 28730 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:21:39,682 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:21:39,682 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 170 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 170 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:21:39,689 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:21:39,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:21:39,783 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:21:44,082 INFO L134 CoverageAnalysis]: Checked inductivity of 28730 backedges. 0 proven. 28730 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:21:44,102 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:21:44,102 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [170, 170] total 340 [2018-10-01 01:21:44,103 INFO L459 AbstractCegarLoop]: Interpolant automaton has 342 states [2018-10-01 01:21:44,110 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 342 interpolants. [2018-10-01 01:21:44,110 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:21:44,110 INFO L87 Difference]: Start difference. First operand 342 states and 342 transitions. Second operand 342 states. [2018-10-01 01:21:48,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:21:48,805 INFO L93 Difference]: Finished difference Result 345 states and 345 transitions. [2018-10-01 01:21:48,805 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 172 states. [2018-10-01 01:21:48,805 INFO L78 Accepts]: Start accepts. Automaton has 342 states. Word has length 341 [2018-10-01 01:21:48,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:21:48,805 INFO L225 Difference]: With dead ends: 345 [2018-10-01 01:21:48,805 INFO L226 Difference]: Without dead ends: 344 [2018-10-01 01:21:48,806 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 510 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 340 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.2s Time [2018-10-01 01:21:48,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 344 states. [2018-10-01 01:21:48,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 344 to 344. [2018-10-01 01:21:48,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 344 states. [2018-10-01 01:21:48,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 344 states to 344 states and 344 transitions. [2018-10-01 01:21:48,811 INFO L78 Accepts]: Start accepts. Automaton has 344 states and 344 transitions. Word has length 341 [2018-10-01 01:21:48,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:21:48,811 INFO L480 AbstractCegarLoop]: Abstraction has 344 states and 344 transitions. [2018-10-01 01:21:48,811 INFO L481 AbstractCegarLoop]: Interpolant automaton has 342 states. [2018-10-01 01:21:48,812 INFO L276 IsEmpty]: Start isEmpty. Operand 344 states and 344 transitions. [2018-10-01 01:21:48,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 344 [2018-10-01 01:21:48,812 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:21:48,813 INFO L375 BasicCegarLoop]: trace histogram [171, 170, 1, 1] [2018-10-01 01:21:48,813 INFO L423 AbstractCegarLoop]: === Iteration 171 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:21:48,813 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:21:48,813 INFO L82 PathProgramCache]: Analyzing trace with hash -636280268, now seen corresponding path program 170 times [2018-10-01 01:21:48,813 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:21:48,813 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:21:48,814 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:21:48,814 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:21:48,814 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:21:48,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:21:50,308 INFO L134 CoverageAnalysis]: Checked inductivity of 29070 backedges. 0 proven. 29070 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:21:50,308 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:21:50,308 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 171 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 171 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:21:50,316 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 01:21:50,403 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 01:21:50,403 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:21:50,408 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:21:54,747 INFO L134 CoverageAnalysis]: Checked inductivity of 29070 backedges. 0 proven. 29070 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:21:54,767 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:21:54,767 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [171, 171] total 342 [2018-10-01 01:21:54,768 INFO L459 AbstractCegarLoop]: Interpolant automaton has 344 states [2018-10-01 01:21:54,775 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 344 interpolants. [2018-10-01 01:21:54,775 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:21:54,775 INFO L87 Difference]: Start difference. First operand 344 states and 344 transitions. Second operand 344 states. [2018-10-01 01:22:00,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:22:00,064 INFO L93 Difference]: Finished difference Result 347 states and 347 transitions. [2018-10-01 01:22:00,064 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 173 states. [2018-10-01 01:22:00,064 INFO L78 Accepts]: Start accepts. Automaton has 344 states. Word has length 343 [2018-10-01 01:22:00,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:22:00,065 INFO L225 Difference]: With dead ends: 347 [2018-10-01 01:22:00,065 INFO L226 Difference]: Without dead ends: 346 [2018-10-01 01:22:00,065 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 513 GetRequests, 171 SyntacticMatches, 0 SemanticMatches, 342 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.2s Time [2018-10-01 01:22:00,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 346 states. [2018-10-01 01:22:00,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 346 to 346. [2018-10-01 01:22:00,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 346 states. [2018-10-01 01:22:00,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 346 states to 346 states and 346 transitions. [2018-10-01 01:22:00,071 INFO L78 Accepts]: Start accepts. Automaton has 346 states and 346 transitions. Word has length 343 [2018-10-01 01:22:00,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:22:00,071 INFO L480 AbstractCegarLoop]: Abstraction has 346 states and 346 transitions. [2018-10-01 01:22:00,071 INFO L481 AbstractCegarLoop]: Interpolant automaton has 344 states. [2018-10-01 01:22:00,071 INFO L276 IsEmpty]: Start isEmpty. Operand 346 states and 346 transitions. [2018-10-01 01:22:00,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 346 [2018-10-01 01:22:00,072 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:22:00,072 INFO L375 BasicCegarLoop]: trace histogram [172, 171, 1, 1] [2018-10-01 01:22:00,072 INFO L423 AbstractCegarLoop]: === Iteration 172 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:22:00,073 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:22:00,073 INFO L82 PathProgramCache]: Analyzing trace with hash -1579980426, now seen corresponding path program 171 times [2018-10-01 01:22:00,073 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:22:00,073 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:22:00,073 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:22:00,073 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:22:00,074 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:22:00,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:22:01,620 INFO L134 CoverageAnalysis]: Checked inductivity of 29412 backedges. 0 proven. 29412 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:22:01,620 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:22:01,620 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 172 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 172 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:22:01,629 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 01:22:01,971 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 172 check-sat command(s) [2018-10-01 01:22:01,971 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:22:01,977 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:22:06,298 INFO L134 CoverageAnalysis]: Checked inductivity of 29412 backedges. 0 proven. 29412 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:22:06,318 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:22:06,318 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [172, 172] total 344 [2018-10-01 01:22:06,319 INFO L459 AbstractCegarLoop]: Interpolant automaton has 346 states [2018-10-01 01:22:06,326 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 346 interpolants. [2018-10-01 01:22:06,326 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:22:06,326 INFO L87 Difference]: Start difference. First operand 346 states and 346 transitions. Second operand 346 states. [2018-10-01 01:22:10,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:22:10,877 INFO L93 Difference]: Finished difference Result 349 states and 349 transitions. [2018-10-01 01:22:10,877 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 174 states. [2018-10-01 01:22:10,877 INFO L78 Accepts]: Start accepts. Automaton has 346 states. Word has length 345 [2018-10-01 01:22:10,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:22:10,878 INFO L225 Difference]: With dead ends: 349 [2018-10-01 01:22:10,878 INFO L226 Difference]: Without dead ends: 348 [2018-10-01 01:22:10,878 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 516 GetRequests, 172 SyntacticMatches, 0 SemanticMatches, 344 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.2s Time [2018-10-01 01:22:10,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 348 states. [2018-10-01 01:22:10,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 348 to 348. [2018-10-01 01:22:10,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 348 states. [2018-10-01 01:22:10,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 348 states to 348 states and 348 transitions. [2018-10-01 01:22:10,886 INFO L78 Accepts]: Start accepts. Automaton has 348 states and 348 transitions. Word has length 345 [2018-10-01 01:22:10,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:22:10,887 INFO L480 AbstractCegarLoop]: Abstraction has 348 states and 348 transitions. [2018-10-01 01:22:10,887 INFO L481 AbstractCegarLoop]: Interpolant automaton has 346 states. [2018-10-01 01:22:10,887 INFO L276 IsEmpty]: Start isEmpty. Operand 348 states and 348 transitions. [2018-10-01 01:22:10,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 348 [2018-10-01 01:22:10,888 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:22:10,888 INFO L375 BasicCegarLoop]: trace histogram [173, 172, 1, 1] [2018-10-01 01:22:10,889 INFO L423 AbstractCegarLoop]: === Iteration 173 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:22:10,889 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:22:10,889 INFO L82 PathProgramCache]: Analyzing trace with hash 2057234488, now seen corresponding path program 172 times [2018-10-01 01:22:10,889 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:22:10,889 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:22:10,890 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:22:10,890 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:22:10,890 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:22:11,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:22:12,493 INFO L134 CoverageAnalysis]: Checked inductivity of 29756 backedges. 0 proven. 29756 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:22:12,493 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:22:12,493 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 173 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 173 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:22:12,501 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 01:22:12,612 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 01:22:12,612 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:22:12,618 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:22:16,993 INFO L134 CoverageAnalysis]: Checked inductivity of 29756 backedges. 0 proven. 29756 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:22:17,015 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:22:17,015 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [173, 173] total 346 [2018-10-01 01:22:17,016 INFO L459 AbstractCegarLoop]: Interpolant automaton has 348 states [2018-10-01 01:22:17,022 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 348 interpolants. [2018-10-01 01:22:17,022 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:22:17,023 INFO L87 Difference]: Start difference. First operand 348 states and 348 transitions. Second operand 348 states. [2018-10-01 01:22:22,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:22:22,130 INFO L93 Difference]: Finished difference Result 351 states and 351 transitions. [2018-10-01 01:22:22,131 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 175 states. [2018-10-01 01:22:22,131 INFO L78 Accepts]: Start accepts. Automaton has 348 states. Word has length 347 [2018-10-01 01:22:22,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:22:22,131 INFO L225 Difference]: With dead ends: 351 [2018-10-01 01:22:22,131 INFO L226 Difference]: Without dead ends: 350 [2018-10-01 01:22:22,132 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 519 GetRequests, 173 SyntacticMatches, 0 SemanticMatches, 346 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.3s Time [2018-10-01 01:22:22,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 350 states. [2018-10-01 01:22:22,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 350 to 350. [2018-10-01 01:22:22,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 350 states. [2018-10-01 01:22:22,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 350 states to 350 states and 350 transitions. [2018-10-01 01:22:22,137 INFO L78 Accepts]: Start accepts. Automaton has 350 states and 350 transitions. Word has length 347 [2018-10-01 01:22:22,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:22:22,137 INFO L480 AbstractCegarLoop]: Abstraction has 350 states and 350 transitions. [2018-10-01 01:22:22,138 INFO L481 AbstractCegarLoop]: Interpolant automaton has 348 states. [2018-10-01 01:22:22,138 INFO L276 IsEmpty]: Start isEmpty. Operand 350 states and 350 transitions. [2018-10-01 01:22:22,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 350 [2018-10-01 01:22:22,139 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:22:22,139 INFO L375 BasicCegarLoop]: trace histogram [174, 173, 1, 1] [2018-10-01 01:22:22,139 INFO L423 AbstractCegarLoop]: === Iteration 174 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:22:22,139 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:22:22,139 INFO L82 PathProgramCache]: Analyzing trace with hash 1317387898, now seen corresponding path program 173 times [2018-10-01 01:22:22,139 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:22:22,139 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:22:22,140 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:22:22,140 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:22:22,140 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:22:22,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:22:23,675 INFO L134 CoverageAnalysis]: Checked inductivity of 30102 backedges. 0 proven. 30102 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:22:23,675 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:22:23,675 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 174 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 174 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:22:23,682 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 01:22:24,063 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 174 check-sat command(s) [2018-10-01 01:22:24,064 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:22:24,077 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:22:28,504 INFO L134 CoverageAnalysis]: Checked inductivity of 30102 backedges. 0 proven. 30102 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:22:28,526 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:22:28,526 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [174, 174] total 348 [2018-10-01 01:22:28,527 INFO L459 AbstractCegarLoop]: Interpolant automaton has 350 states [2018-10-01 01:22:28,533 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 350 interpolants. [2018-10-01 01:22:28,533 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:22:28,534 INFO L87 Difference]: Start difference. First operand 350 states and 350 transitions. Second operand 350 states. [2018-10-01 01:22:33,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:22:33,627 INFO L93 Difference]: Finished difference Result 353 states and 353 transitions. [2018-10-01 01:22:33,628 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 176 states. [2018-10-01 01:22:33,628 INFO L78 Accepts]: Start accepts. Automaton has 350 states. Word has length 349 [2018-10-01 01:22:33,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:22:33,628 INFO L225 Difference]: With dead ends: 353 [2018-10-01 01:22:33,628 INFO L226 Difference]: Without dead ends: 352 [2018-10-01 01:22:33,629 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 522 GetRequests, 174 SyntacticMatches, 0 SemanticMatches, 348 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.3s Time [2018-10-01 01:22:33,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 352 states. [2018-10-01 01:22:33,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 352 to 352. [2018-10-01 01:22:33,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 352 states. [2018-10-01 01:22:33,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 352 states to 352 states and 352 transitions. [2018-10-01 01:22:33,634 INFO L78 Accepts]: Start accepts. Automaton has 352 states and 352 transitions. Word has length 349 [2018-10-01 01:22:33,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:22:33,634 INFO L480 AbstractCegarLoop]: Abstraction has 352 states and 352 transitions. [2018-10-01 01:22:33,634 INFO L481 AbstractCegarLoop]: Interpolant automaton has 350 states. [2018-10-01 01:22:33,634 INFO L276 IsEmpty]: Start isEmpty. Operand 352 states and 352 transitions. [2018-10-01 01:22:33,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 352 [2018-10-01 01:22:33,635 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:22:33,635 INFO L375 BasicCegarLoop]: trace histogram [175, 174, 1, 1] [2018-10-01 01:22:33,636 INFO L423 AbstractCegarLoop]: === Iteration 175 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:22:33,636 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:22:33,636 INFO L82 PathProgramCache]: Analyzing trace with hash -1005581252, now seen corresponding path program 174 times [2018-10-01 01:22:33,636 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:22:33,636 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:22:33,636 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:22:33,636 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:22:33,637 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:22:33,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:22:35,199 INFO L134 CoverageAnalysis]: Checked inductivity of 30450 backedges. 0 proven. 30450 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:22:35,200 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:22:35,200 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 175 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2018-10-01 01:22:35,211 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE Waiting until toolchain timeout for monitored process 175 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:22:35,535 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 175 check-sat command(s) [2018-10-01 01:22:35,535 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:22:35,542 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:22:40,023 INFO L134 CoverageAnalysis]: Checked inductivity of 30450 backedges. 0 proven. 30450 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:22:40,044 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:22:40,044 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [175, 175] total 350 [2018-10-01 01:22:40,045 INFO L459 AbstractCegarLoop]: Interpolant automaton has 352 states [2018-10-01 01:22:40,051 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 352 interpolants. [2018-10-01 01:22:40,051 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:22:40,052 INFO L87 Difference]: Start difference. First operand 352 states and 352 transitions. Second operand 352 states. [2018-10-01 01:22:44,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:22:44,904 INFO L93 Difference]: Finished difference Result 355 states and 355 transitions. [2018-10-01 01:22:44,904 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 177 states. [2018-10-01 01:22:44,904 INFO L78 Accepts]: Start accepts. Automaton has 352 states. Word has length 351 [2018-10-01 01:22:44,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:22:44,905 INFO L225 Difference]: With dead ends: 355 [2018-10-01 01:22:44,905 INFO L226 Difference]: Without dead ends: 354 [2018-10-01 01:22:44,905 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 525 GetRequests, 175 SyntacticMatches, 0 SemanticMatches, 350 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.4s Time [2018-10-01 01:22:44,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 354 states. [2018-10-01 01:22:44,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 354 to 354. [2018-10-01 01:22:44,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 354 states. [2018-10-01 01:22:44,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 354 states to 354 states and 354 transitions. [2018-10-01 01:22:44,911 INFO L78 Accepts]: Start accepts. Automaton has 354 states and 354 transitions. Word has length 351 [2018-10-01 01:22:44,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:22:44,911 INFO L480 AbstractCegarLoop]: Abstraction has 354 states and 354 transitions. [2018-10-01 01:22:44,911 INFO L481 AbstractCegarLoop]: Interpolant automaton has 352 states. [2018-10-01 01:22:44,911 INFO L276 IsEmpty]: Start isEmpty. Operand 354 states and 354 transitions. [2018-10-01 01:22:44,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 354 [2018-10-01 01:22:44,912 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:22:44,912 INFO L375 BasicCegarLoop]: trace histogram [176, 175, 1, 1] [2018-10-01 01:22:44,912 INFO L423 AbstractCegarLoop]: === Iteration 176 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:22:44,913 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:22:44,913 INFO L82 PathProgramCache]: Analyzing trace with hash 4059518, now seen corresponding path program 175 times [2018-10-01 01:22:44,913 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:22:44,913 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:22:44,913 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:22:44,913 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:22:44,913 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:22:45,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:22:46,479 INFO L134 CoverageAnalysis]: Checked inductivity of 30800 backedges. 0 proven. 30800 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:22:46,480 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:22:46,480 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 176 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 176 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:22:46,493 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:22:46,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:22:46,587 INFO L273 TraceCheckSpWp]: Computing forward predicates... Received shutdown request... [2018-10-01 01:22:50,814 INFO L177 TraceCheckSpWp]: Timeout while computing interpolants [2018-10-01 01:22:51,015 WARN L521 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 176 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:22:51,015 WARN L549 AbstractCegarLoop]: Verification canceled [2018-10-01 01:22:51,021 WARN L206 ceAbstractionStarter]: Timeout [2018-10-01 01:22:51,021 INFO L202 PluginConnector]: Adding new model MonadicInvariant01.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.10 01:22:51 BoogieIcfgContainer [2018-10-01 01:22:51,021 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-01 01:22:51,022 INFO L168 Benchmark]: Toolchain (without parser) took 797984.40 ms. Allocated memory was 1.5 GB in the beginning and 1.8 GB in the end (delta: 202.4 MB). Free memory was 1.5 GB in the beginning and 1.4 GB in the end (delta: 31.7 MB). Peak memory consumption was 234.1 MB. Max. memory is 7.1 GB. [2018-10-01 01:22:51,024 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.67 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-01 01:22:51,024 INFO L168 Benchmark]: Boogie Procedure Inliner took 43.80 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-01 01:22:51,025 INFO L168 Benchmark]: Boogie Preprocessor took 21.01 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-01 01:22:51,025 INFO L168 Benchmark]: RCFGBuilder took 230.94 ms. Allocated memory is still 1.5 GB. Free memory was 1.5 GB in the beginning and 1.5 GB in the end (delta: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. [2018-10-01 01:22:51,026 INFO L168 Benchmark]: TraceAbstraction took 797682.75 ms. Allocated memory was 1.5 GB in the beginning and 1.8 GB in the end (delta: 202.4 MB). Free memory was 1.5 GB in the beginning and 1.4 GB in the end (delta: 10.5 MB). Peak memory consumption was 212.9 MB. Max. memory is 7.1 GB. [2018-10-01 01:22:51,028 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Boogie PL CUP Parser took 0.67 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 43.80 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Preprocessor took 21.01 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 230.94 ms. Allocated memory is still 1.5 GB. Free memory was 1.5 GB in the beginning and 1.5 GB in the end (delta: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 797682.75 ms. Allocated memory was 1.5 GB in the beginning and 1.8 GB in the end (delta: 202.4 MB). Free memory was 1.5 GB in the beginning and 1.4 GB in the end (delta: 10.5 MB). Peak memory consumption was 212.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 25]: Timeout (TraceAbstraction) Unable to prove that assertion always holds (line 25). Cancelled while BasicCegarLoop was analyzing trace of length 354 with TraceHistMax 176, while TraceCheckSpWp was constructing forward predicates, while XnfDer was eliminating 1 quantified variables from 2 xjuncts. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 6 locations, 1 error locations. TIMEOUT Result, 797.6s OverallTime, 176 OverallIterations, 176 TraceHistogramMax, 330.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 352 SDtfs, 0 SDslu, 1 SDs, 0 SdLazy, 57292 SolverSat, 586 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 51.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 46198 GetRequests, 15399 SyntacticMatches, 0 SemanticMatches, 30799 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 396.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=354occurred in iteration=175, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.8s AutomataMinimizationTime, 175 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.9s SsaConstructionTime, 22.4s SatisfiabilityAnalysisTime, 422.1s InterpolantComputationTime, 61947 NumberOfCodeBlocks, 61947 NumberOfCodeBlocksAsserted, 8121 NumberOfCheckSat, 61598 ConstructedInterpolants, 0 QuantifiedInterpolants, 86486372 SizeOfPredicates, 0 NumberOfNonLiveVariables, 62292 ConjunctsInSsa, 15747 ConjunctsInUnsatCore, 349 InterpolantComputations, 1 PerfectInterpolantSequences, 0/3572800 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/MonadicInvariant01.bpl_svcomp-Reach-32bit-Automizer_Default_PUPT.epf_AutomizerBplInline.xml/Csv-Benchmark-0-2018-10-01_01-22-51-037.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/MonadicInvariant01.bpl_svcomp-Reach-32bit-Automizer_Default_PUPT.epf_AutomizerBplInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-10-01_01-22-51-037.csv Completed graceful shutdown